Here's my current RMT. I think one or two people have seen it, so I figured I'd post it up for those that haven't.
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Lugia w/ Leftovers
Timid
Pressure
EVs: 252 HP / 64 SpecDef / 192 Speed
-Substitute
-Ice Beam
-Hydro Pump
-Aeroblast
My Sub Lugia. Lugia's main strategy here is to sub up and start dealing damage. That's essentially it. With ridiculous defenses and good HP to boot, breaking the sub will definitely be a challenge for opponents, allowing Lugia to hide behind it as long as possible. First, since I won't spend my time subbing three to four times a match, instead of being precise, I just dumped 252 EVs in HP. 192 Speed will outrun a good amount of Ubers running speed+ natures, while some Special Defense EVs bolsters its naturally strong SpecDef stat even more.
Other than sub, first comes Ice Beam. This is pretty standard to deal with a good amount of threats. Since I cannot waste time hoping that moves like Blizzard aren't avoided, the good accuracy with Ice Beam insures damage being dealt and I can rely on it.
Then is Hydro Pump. This is another powerful attack, but situational, really if it comes down to a Sunny Day team rocking Groudon or things like Tyranitar or Heatran (especially since Tyranitar may run Stone Edge/Rock Slide, which will kill Lugia).
Finally, Aeroblast. While it doesn't have the best coverage, it is a great STAB and can take out annoying Ludicolos and opposing Abomasnows and the like. Plus it sounds cool.
Weavile w/ Focus Sash
Jolly
Pressure
EVs: 252 Speed / 252 Atk / 4 HP
-Fake Out
-Brick Break
-Night Slash
-Ice Shard
Next is Weavile. Weavile is my Fake Out user to help Lugia get that sub up in the first round. Focus Sash is in there just in case he gets nailed in an offensive push early on. From that point, he'll either stay out to continue doing damage or switch out to be a revenge killer later. Brick Break does wonders on Dialga, while Night Slash is a great STAB with some criticals behind it. Finally, Ice Shard comes in as priority with STAB just to balance it out.
Weavile's main function is really that first round support followed by whatever gap it can fill later on in the match. I don't expect Weavile to be around too long once its out on the field, so it's main goal is to at least take something with it before it goes down.
Mewtwo w/ Life Orb
Modest
Pressure
EVs: 252 Speed / 252 SpecAtk / 4 HP
-Aura Sphere
-Protect
-Grass Knot
-Blizzard
Mewtwo is my first of two Pokemon in the back, rocking Life Orb for some more damage. This Mewtwo is built to do as much damage as possible with full EVs in Special Attack, a Modest nature and the aforementioned Life Orb. He will pull no punches.
First is Aura Sphere. Dialga hates it, as do others. 90 Base Power and perfect accuracy makes it a solid move. Protect follows, allowing Mewtwo to survive some key situations if need be and just being needed in many positions in VGC Doubles. Of course, anyone willing to kill it with Explosion will meet the wall of protection it creates and Mewtwo gets more time to wreck havoc.
Third is Grass Knot. Considering a lot of Ubers are heavy, well, this just makes sense, but it is mainly for Kyogre because of how common it is. Let's just say that Kyogre won't be around too long with Mewtwo on the field.
Finally is Blizzard. Even though opposing Pokemon avoiding it randomly can be a killer both in the game and motivationally, emotionally, etc, when it does come through, it's pretty epic. Hits both opposing Pokemon, can do great amounts of damage and just overall works very well with Mewtwo in doubles.
Overall, Mewtwo is all about speed and power, but mostly power. Timid Mewtwo's will be outrunning it, but Weavile is always there to lend a hand, as well as Lugia to take hits. That extra power can really come in handy when you truly need something to go down.
Abomasnow w/ Lum Berry
Hasty
Snow Warning
EVs: 140 Atk / 116 SpecAtk / 252 HP
-Blizzard
-Earthquake
-Shadow Ball
-Icy Wind
Finally, the last of my backups, Abomasnow. Originally, this was a choice scarf set, but I went against it because of the fact that choice can really screw me over in doubles. So, I put the 252 remaining EVs from speed to HP and went from there. Watch out Trick Room, Obama knows whats up.
First is Blizzard. Like said before, it's strong, has good coverage and hits both opponents. In Obama's case, it gets STAB, which is also nice. Oh, and did I mention, Obama makes hail come about. That's nifty.
Second is Earthquake. I mean, who doesn't love Earthquake? Great coverage, deals great amounts of damage and works well with my team, save for Weavile (though I don't think I'll ever truly be in a position with Weavile and Abomasnow in the same situation with Obama using EQ).
Third is Shadow Ball. This was originally going on Mewtwo until I moved this to Obama in favor of Aura Sphere on Mewtwo. A strong attack to deal with any pesky Psychic types and all of that.
Finally, Icy Wind. I've seen this been used very effectively in doubles and it could come in handy. With the bit of damage it does deal, it drops the opponents speed by one stage, which could definitely be a key to success, possibly helping my Mewtwo outrun any max speed Timid Mewtwo's and all of that. It may be situational, but it could come in handy.