lol, crappy title but this is my UU team that I've made in the recent "meh"ness of OU. I could really use some input from the seasoned players as I haven't played much. I did talk to a few people on shoddy that helped me get a few small changes made but any help is much appreciated. :)
@Flame Orb
Jolly-Guts
6 HP/252 Atk/252 Spe
~Facade
~Bravebird
~Protect
~U-Turn
I've always liked Swellow and UU gave me a chance to use him successfully. This works nice as a lead although I have found that Fake Out Persian does about 50% which isn't very welcomed. Anyway, the basic plan is to either U-Turn out to see their Swellow counter or Pursuit something that looks like it will try to switch out.
@Choice Specs
Timid-Levitate
6 HP/252 SpAtk/252 Spe
~Thunderbolt
~Shadowball
~Hidden Power Ice/Ground
~Trick
Rotom is always fun and provides some nice resistances and immunities on this team. Thunderbolt and Shadowball provide good coverage and I chose HP Ice solely for extra coverage against UU grounds. Trick is always a nice little trick as well. lol.
@Life Orb
Jolly-Leaf Guard
126 HP/160 Atk/224 Spe
~Swords Dance
~Leaf Blade
~X-Scissor/Aerial Ace
~Baton Pass
Leafeon has been extremely successful for me. Good attack and a decent speed coupled with its bulkiness has granted me quite a few sweeps. Leaf Blade is there for an amazing stab while X-Scissor is nice against other grass types and psychics. For now, I have Aerial-Ace but some other support move may be nice. I know Baton Pass is popular so I may try that.
@Wide Lens
Timid-Flash Fire
6 HP/252 SpAtk/252 Spe
~Hypnosis
~Nasty Plot
~Fire Blast
~Energy Ball
I can definitely say that Ninetales was one of the perks of playing UU. The rise of Chomp and Heatran have made her basically unusable in OU but she really gets a shot at glory in UU. This doesn't really like Hypno so maybe Dark Pulse could be an option.
@Leftovers
Impish-Intimidate
252 HP/56 Atk/200 Def
~Brick Break/Toxic
~Ice Punch/Seismic Toss
~Stockpile
~Baton Pass
With Intimidate, Mawile can counter most physical threats quite nicely. The biggest issue is the lack of a proper recovery move. Resttalk is alright, but the lack of recovery can be an issue. It's only weaknesses, Fire, Fight, and Ground, are covered by Ninetales and Rotom respectively.
@Leftovers
Calm-Magic Guard
252 HP/56 Def/200 SpDef/4 Spe
~Seismic Toss
~Encore
~Thunderwave
~Wish
Here's my UU Blissey with weight loss. I've tried both Claydol and Shuckle in this spot but Clefable seems to fit a bit better. Thunderwave really helps against scarfers although I may consider Encore to get some free switches.
Alright, well that's my team. I tried to keep some of the only threats I know of in mind while sticking to the basics of team-building and covering the types. As you may be able to see, I am pretty new to this so any help would be much appreciated.

Jolly-Guts
6 HP/252 Atk/252 Spe
~Facade
~Bravebird
~Protect
~U-Turn
I've always liked Swellow and UU gave me a chance to use him successfully. This works nice as a lead although I have found that Fake Out Persian does about 50% which isn't very welcomed. Anyway, the basic plan is to either U-Turn out to see their Swellow counter or Pursuit something that looks like it will try to switch out.

Timid-Levitate
6 HP/252 SpAtk/252 Spe
~Thunderbolt
~Shadowball
~Hidden Power Ice/Ground
~Trick
Rotom is always fun and provides some nice resistances and immunities on this team. Thunderbolt and Shadowball provide good coverage and I chose HP Ice solely for extra coverage against UU grounds. Trick is always a nice little trick as well. lol.

Jolly-Leaf Guard
126 HP/160 Atk/224 Spe
~Swords Dance
~Leaf Blade
~X-Scissor/Aerial Ace
~Baton Pass
Leafeon has been extremely successful for me. Good attack and a decent speed coupled with its bulkiness has granted me quite a few sweeps. Leaf Blade is there for an amazing stab while X-Scissor is nice against other grass types and psychics. For now, I have Aerial-Ace but some other support move may be nice. I know Baton Pass is popular so I may try that.

Timid-Flash Fire
6 HP/252 SpAtk/252 Spe
~Hypnosis
~Nasty Plot
~Fire Blast
~Energy Ball
I can definitely say that Ninetales was one of the perks of playing UU. The rise of Chomp and Heatran have made her basically unusable in OU but she really gets a shot at glory in UU. This doesn't really like Hypno so maybe Dark Pulse could be an option.

Impish-Intimidate
252 HP/56 Atk/200 Def
~Brick Break/Toxic
~Ice Punch/Seismic Toss
~Stockpile
~Baton Pass
With Intimidate, Mawile can counter most physical threats quite nicely. The biggest issue is the lack of a proper recovery move. Resttalk is alright, but the lack of recovery can be an issue. It's only weaknesses, Fire, Fight, and Ground, are covered by Ninetales and Rotom respectively.

Calm-Magic Guard
252 HP/56 Def/200 SpDef/4 Spe
~Seismic Toss
~Encore
~Thunderwave
~Wish
Here's my UU Blissey with weight loss. I've tried both Claydol and Shuckle in this spot but Clefable seems to fit a bit better. Thunderwave really helps against scarfers although I may consider Encore to get some free switches.
Alright, well that's my team. I tried to keep some of the only threats I know of in mind while sticking to the basics of team-building and covering the types. As you may be able to see, I am pretty new to this so any help would be much appreciated.
All changes made in bold.