So I decided to try out Pokemon battling just because I'm bored. This is the best I can come up with so far with my basic understanding of the game. But don't take that to mean that I don't want technical advice, because I do.
Anyway, here goes:
Lead Machamp (Female even though it's weird, cuz I found some random attract abusers)
@Lum Berry
No Guard/Adamant
240 HP / 248 Atk / 16 SpD / 4 Spe
DynamicPunch
Payback
Ice Punch
Bullet Punch
This guy, er, girl is pretty tough to counter, I mean even if they switch in something like a Flying or Psychic type that resists dynamicpunch, they still get confused, and then I can usually switch in something else on my team or keep attacking with Machamp depending on the pokemon.
Lead Heatran
@Shuca Berry
Flash Fire/Naive
252 SpA / 4 SpD / 252 Spe
Stealth Rock
Fire Blast
Explosion
Earth Power
This dude is awesome! I find so many opportunities to make use of his Flash fire and steel typing to get some free stealth rocks up, or to just do great damage against teams that I feel I need to move as fast as possible to defeat.
Starmie
@Life Orb
Natural Cure/Timid
252 SpA / 4 SpD / 252 Spe
Hydro Pump
ThunderBolt
Psychic
Rapid Spin
Being somebody who began pokemon with RBY, I have a natural tendency to gravitate towards Starmie. Even in this new generation of games, I feel that she still has what it takes to blow through a lot of pokemon. As an added bonus, I have rapid spin in case I really need it. I chose Psychic over Ice Beam because I specifically have problems with other lead Machamps, as well as Heracross and...Breloom. Actually I still haven't found a good way to deal with Breloom, so that's definitely an area I'll need some advice for.
Scizor
@Choice Band
Technician/Adamant
248 HP / 252 Atk / 8 Spe
U-Turn
Bullet Punch
Pursuit
Superpower
Baits Fire Type attacks, scouts for me, deals with annoyances like opposing Starmie and Gengar (though I have to play guessing games if the gengar has HP fire, and sometimes I get caught off guard), and does some decent revenge killing. I really like his typing and synergy with Heatran and Starmie - the former sets up rocks to make scizors work easier, and the latter removes rocks so I can worry a little bit less about switching him in. Yeah, I ripped that off the strategy pokedex, but it made sense, and I've actually found that it's quite useful. the point of this RMT is for people to help with stuff the strategy dex can't help me with. :)
Gengar
@Life Orb
Levitate/Timid
4 Def / 252 SpA / 252 Spe
Substitute
Pain Split
Shadow Ball
Focus Blast
Honestly I'm not sure if this guy should be on my team, since I already have Starmie, and Gengar doesnt really help with any of my common type weaknesses (though he probably does help with some specific pokemon). This is one team member that I'm going to need the most help with, as I might be replacing him.
Celebi
@Leftovers
Natural Cure/Bold
252 HP / 220 Def / 36 Spe
Grass Knot
Thunder Wave
Recover
HP Ice
I'm not sure I have a good reason to have Celebi on my team, but from what I've noticed, he seems to bait more Fire-type attacks, kills Gyarados which is nice, and allows me a safe switch in so that I can soften things up with Thunder Wave to allow my Life Orb sweepers to better do their job (I hate Choice Scarfers). Incidentally, one of my major problems is Flygon, since he is immune to thunder wave, and often carries a choice scarf. So, I added HP Ice. Things can get nasty when he knows Crunch though, but then I am free to switch into Heatran or Scizor.
I seem to have trouble with pokemon that have very high special defense, and my only real ways to soften them up is with Heatran's Explosion or Scizor's Superpower.
:\
Well, this concludes my first OU RMT, and my first RMT period. <- I think it's funny when people end a sentence with "period" even though sentences already have a period at the end. :P
Technical advice on how to play this team better would be great, as well as the obvious RMT conventions of critiquing my EV spreads, attacks, held items, and even my choices of pokemon.
Thanks for reading!
Anyway, here goes:

Lead Machamp (Female even though it's weird, cuz I found some random attract abusers)
@Lum Berry
No Guard/Adamant
240 HP / 248 Atk / 16 SpD / 4 Spe
DynamicPunch
Payback
Ice Punch
Bullet Punch
This guy, er, girl is pretty tough to counter, I mean even if they switch in something like a Flying or Psychic type that resists dynamicpunch, they still get confused, and then I can usually switch in something else on my team or keep attacking with Machamp depending on the pokemon.

Lead Heatran
@Shuca Berry
Flash Fire/Naive
252 SpA / 4 SpD / 252 Spe
Stealth Rock
Fire Blast
Explosion
Earth Power
This dude is awesome! I find so many opportunities to make use of his Flash fire and steel typing to get some free stealth rocks up, or to just do great damage against teams that I feel I need to move as fast as possible to defeat.

Starmie
@Life Orb
Natural Cure/Timid
252 SpA / 4 SpD / 252 Spe
Hydro Pump
ThunderBolt
Psychic
Rapid Spin
Being somebody who began pokemon with RBY, I have a natural tendency to gravitate towards Starmie. Even in this new generation of games, I feel that she still has what it takes to blow through a lot of pokemon. As an added bonus, I have rapid spin in case I really need it. I chose Psychic over Ice Beam because I specifically have problems with other lead Machamps, as well as Heracross and...Breloom. Actually I still haven't found a good way to deal with Breloom, so that's definitely an area I'll need some advice for.

Scizor
@Choice Band
Technician/Adamant
248 HP / 252 Atk / 8 Spe
U-Turn
Bullet Punch
Pursuit
Superpower
Baits Fire Type attacks, scouts for me, deals with annoyances like opposing Starmie and Gengar (though I have to play guessing games if the gengar has HP fire, and sometimes I get caught off guard), and does some decent revenge killing. I really like his typing and synergy with Heatran and Starmie - the former sets up rocks to make scizors work easier, and the latter removes rocks so I can worry a little bit less about switching him in. Yeah, I ripped that off the strategy pokedex, but it made sense, and I've actually found that it's quite useful. the point of this RMT is for people to help with stuff the strategy dex can't help me with. :)

Gengar
@Life Orb
Levitate/Timid
4 Def / 252 SpA / 252 Spe
Substitute
Pain Split
Shadow Ball
Focus Blast
Honestly I'm not sure if this guy should be on my team, since I already have Starmie, and Gengar doesnt really help with any of my common type weaknesses (though he probably does help with some specific pokemon). This is one team member that I'm going to need the most help with, as I might be replacing him.

Celebi
@Leftovers
Natural Cure/Bold
252 HP / 220 Def / 36 Spe
Grass Knot
Thunder Wave
Recover
HP Ice
I'm not sure I have a good reason to have Celebi on my team, but from what I've noticed, he seems to bait more Fire-type attacks, kills Gyarados which is nice, and allows me a safe switch in so that I can soften things up with Thunder Wave to allow my Life Orb sweepers to better do their job (I hate Choice Scarfers). Incidentally, one of my major problems is Flygon, since he is immune to thunder wave, and often carries a choice scarf. So, I added HP Ice. Things can get nasty when he knows Crunch though, but then I am free to switch into Heatran or Scizor.
I seem to have trouble with pokemon that have very high special defense, and my only real ways to soften them up is with Heatran's Explosion or Scizor's Superpower.
:\
Well, this concludes my first OU RMT, and my first RMT period. <- I think it's funny when people end a sentence with "period" even though sentences already have a period at the end. :P
Technical advice on how to play this team better would be great, as well as the obvious RMT conventions of critiquing my EV spreads, attacks, held items, and even my choices of pokemon.
Thanks for reading!