*cracks knuckles*
In no particular order...
DBSK: Mirotic, Rising Sun, Doshite (Why did I fall in love with you?), Love in the Ice, Hahaha Song, Wrong Number, Hey! Don't Bring Me Down, Purple Line, My Girlfriend (by Yoochun), Bolero, Break Out, Heart Mind and Soul, Are you a good girl?, Balloons, Toki wo Tomete, You're My Melody, Hug, Proud, Colors, Holding Back the Tears, Evergreen, O, Summer Dream
Super Junior: Sorry Sorry, Boom Boom, Mr. Simple, Perfection, Bonomana, U, Don't Lie, Don't Don, Opera, Break Down
Shinee: Lucifer, Replay, Ring Ding Dong, Ready or Not, Get It, Jo Jo, A-Yo, Hello, Dazzling Girl
BoA: Eat You Up
B.A.P: No Mercy, One Shot, Power, What the Hell, Unbreakable, Warrior
Big Bang: Bad Boy, Fantastic Baby, Turn It Up, Last Farewell, Haru Haru
Beast: Fiction
BTOB: WOW
BTS: No More Dream, We Are Bulletproof Pt.2, I Like It
EXO(M&K): Let Out the Beast, Two Moons, What is Love, History, MAMA, Angel, Machine
G-Dragon: One of a Kind, Heartbreaker, Crayon
Henry Lau: Trap
Infinite: Before the Dawn, The Chaser, Paradise
Kara: Mister, Step
LC9: MaMa Beat, Hold On, Ready Set Go, Skirmish
MBLAQ: Oh Yeah, Run, This is War, Smoky Girl, Cry, Stay, Mona Lisa
U-KISS: Man Man Ha Ni, Neverland, Tick Tack
VIXX: Hyde, UUUUU, Super Hero, Starlight, Rock Ur Body, Chaos, Stop Enduring, Light Me Up
Wonder Boyz: Tarzan
Younique Unit: Maxstep
2PM: I'm Your Man, A.D.T.O.Y, Put Your Hands Up
Taeyang: My Girl, Wedding Dress, I Need a Girl
Nu'est: Action, Face
...some may be in Japanese...