Since I am opposed to virtually every pokemon in Black and White, since they all look pixelated and rushed, I will say my favorite competitive team that I have traded over from Heart Gold, because those are the pokemon I use =P.
Crobat
Confuse Ray
Poison Fang
U-Turn
Roost
Azelf
Protect
Explosion
Flamethrower
Psychic
Celebi
Leech Seed
Heal Bell
Psychic
Recover
Umbreon
Shadow Ball
Mean Look
Moonlight
Toxic
Dusknoir
Focus Punch
Shadow Sneak
Substitute
Ice Punch
Skarmory
Roar
Aerial Ace
Spikes
Roost
Crobat
Confuse Ray
Poison Fang
U-Turn
Roost
Azelf
Protect
Explosion
Flamethrower
Psychic
Celebi
Leech Seed
Heal Bell
Psychic
Recover
Umbreon
Shadow Ball
Mean Look
Moonlight
Toxic
Dusknoir
Focus Punch
Shadow Sneak
Substitute
Ice Punch
Skarmory
Roar
Aerial Ace
Spikes
Roost