Swellow @ Burn Orb
Nature: Adamant
Ability: Guts
EV's: 252Atk, 252Spe, 6Hp
~ Facade
~ Brave Bird
~ Fling
~ U-Turn/Quick Attack/Pursuit/Recycle
Looks novelty at best, huh? I haven't actually tried this yet, but it looks like it could work in principle. Swellow is capable of putting massive holes in any team; as anyone who has ever faced one of these will know. It's 2HKOing Gliscor, that's the sheer power this thing holds. The main problem he has, the reason he isn't top-tier OU, is that he's walled stupid by any Normal/Flying resist. This set attempts to remedy that.
Flinging a Burn Orb actually screws over the vast majority of his counters. Hippowdon gets his attack halved, and with Burn Orb recoil taken into account, can be 2HKO'd by Facade. You still can't touch Skarmory, but it won't like the burn. Bronzong, Metagross, Forretress and Tyranitar, all otherwise decent counters (Well, T-Tar fears U-Turn) are all screwed up by it too. Obviously, Heatran still comes in for free and steamrollers you, but that can't be helped.
As for the last slot, there's three standard options; Pursuit is good for fleeing Pokes, a priority move is invaluable, and U-Turn allows you to escape a counter after burning them. Recycle is probably the least valuable move out of all of them, and is certainly 'gimmicky' at best, but it still deserves a mention, as it's the only way Swellow stands a chance of getting past teams with multiple Normal/Flying resists, and being able to fling out more than one burn could come in useful.