Here's a list of old moves that got some changes in Black/White:

Name	Type	Cat	Game	PP	Base Power	Accuracy	Effect
Bind			Black/White	20	15	85	Binds and squeezes the foe for 2 to 5 turns.
D/P/Pt/HG/SS	20	15	75
Jump Kick			Black/White	10	100	95	A strong jumping kick. May miss and hurt the kicker.
D/P/Pt/HG/SS	25	85	95
Tackle			Black/White	35	50	100	Charges the foe with a full- body tackle.
D/P/Pt/HG/SS	35	35	95
Wrap			Black/White	20	15	90	Wraps and squeezes the foe 2 to 5 times with vines, etc.
D/P/Pt/HG/SS	20	15	85
Thrash			Black/White	10	120	100	A rampage of 2 to 3 turns that confuses the user.
D/P/Pt/HG/SS	20	90	100
Disable			Black/White	20	--	100	Psychically disables one of the foe's moves.
D/P/Pt/HG/SS	20	--	80
Petal Dance			Black/White	10	120	100	A rampage of 2 to 3 turns that confuses the user.
D/P/Pt/HG/SS	20	90	100
Fire Spin			Black/White	15	35	85	Traps the foe in a ring of fire for 2 to 5 turns.
D/P/Pt/HG/SS	15	15	70
Toxic			Black/White	10	--	90	Poisons the foe with an intensifying toxin.
D/P/Pt/HG/SS	10	--	85
Hypnosis			Black/White	20	--	60	A hypnotizing move that may induce sleep.
D/P/Pt/HG/SS	20	--	70
Clamp			Black/White	15	35	85	Traps and squeezes the foe for 2 to 5 turns.
D/P/Pt/HG/SS	10	35	75
Hi Jump Kick			Black/White	10	130	90	A jumping knee kick. If it misses, the user is hurt.
D/P/Pt/HG/SS	20	100	90
Glare			Black/White	30	--	90	Intimidates and frightens the foe into paralysis.
D/P/Pt/HG/SS	30	--	75
Poison Gas			Black/White	40	--	80	Envelops the foe in a toxic gas that may poison.
D/P/Pt/HG/SS	40	--	55
Crabhammer			Black/White	10	90	90	Hammers with a pincer. Has a high critical-hit ratio.
D/P/Pt/HG/SS	10	90	85
Cotton Spore			Black/White	40	--	100	Spores cling to the foe, sharply reducing SPEED.
D/P/Pt/HG/SS	40	--	85
Scary Face			Black/White	10	--	100	Frightens with a scary face to sharply reduce SPEED.
D/P/Pt/HG/SS	10	--	90
Bone Rush			Black/White	10	25	90	Strikes the foe with a bone in hand 2 to 5 times.
D/P/Pt/HG/SS	10	25	80
Giga Drain			Black/White	10	75	100	An attack that steals half the damage inflicted.
D/P/Pt/HG/SS	10	60	100
Fury Cutter			Black/White	20	20	95	An attack that intensifies on each successive hit.
D/P/Pt/HG/SS	20	10	95
Future Sight			Black/White	10	100	100	Heightens inner power to strike 2 turns later.
D/P/Pt/HG/SS	15	80	90
Whirlpool			Black/White	15	35	85	Traps and hurts the foe in a whirlpool for 2 to 5 turns.
D/P/Pt/HG/SS	15	15	70
Beat Up			Black/White	10	--	100	Summons party POKéMON to join in the attack.
D/P/Pt/HG/SS	10	10	100
Uproar			Black/White	10	90	100	Causes an uproar for 2 to 5 turns and prevents sleep.
D/P/Pt/HG/SS	10	50	100
Sand Tomb			Black/White	15	35	85	Traps and hurts the foe in quicksand for 2 to 5 turns.
D/P/Pt/HG/SS	15	15	70
Bullet Seed			Black/White	30	25	100	Shoots 2 to 5 seeds in a row to strike the foe.
D/P/Pt/HG/SS	30	10	100
Icicle Spear			Black/White	30	25	100	Attacks the foe by firing 2 to 5 icicles in a row.
D/P/Pt/HG/SS	30	10	100
Covet			Black/White	40	60	100	Cutely begs to obtain an item held by the foe.
D/P/Pt/HG/SS	40	40	100
Rock Blast			Black/White	10	25	90	Hurls boulders at the foe 2 to 5 times in a row.
D/P/Pt/HG/SS	10	25	80
Doom Desire			Black/White	5	140	100	Summons strong sunlight to attack 2 turns later.
D/P/Pt/HG/SS	5	120	85
Feint			Black/White	10	30	100	Only works when foe uses Protect or Detect
D/P/Pt/HG/SS	10	50	100
Last Resort			Black/White	5	140	100	Only usable when all other attacks have been used
D/P/Pt/HG/SS	5	130	100
Drain Punch			Black/White	10	75	100	User recovers half the damage inflicted
D/P/Pt/HG/SS	5	60	100
Magma Storm			Black/White	5	120	75	Traps foe
D/P/Pt/HG/SS	5	120	70

Good to see Thrash and Petal Dance on par with Outrage, although personally I would have liked to seen Outrage nerfed instead of the other two bulked up. Outrage was crazy powerful as it was, and now we have Grass and Normal users with that same amount of power. Be afraid!

Also, could Giga Drain finally be useful?

Oh, and Spore/Sleep Powder users are more important than ever now that Hypnosis has been taken down a notch in accuracy.

Wait wait wait!! so the black legendary pokemon is in white, while the white legendary pokemon is in black?? All so confusing >.<

If you wanted to hear the story, then it would make a bit more sense.

SPOILERS:

The leader of Team Plasma, N, gains control of Zekrom (Black colored Legendary) in Black and Reshiram (White colored Legendary) in White. You get the opposite Pokemon to challenge him.

Ok i hate you cuz i just read that :P But it does make sense, and now i have  no idea which version to get... both??

Here's to hoping they go full 3D for the 3DS

Bloody hell, Hypnosis accuracy got cut even more. I love using that move combo-ing it with either Dream Eater or Wake Up Slap, now my battles will be even tougher! >:(

Marker! Keep up the great work Smeags.