Kid Cudi
WuTang/Raekwon
Lady Gaga
Michael Jackson
Phoenix
Daft Punk
Justin Timberlake
Rihanna
Alicia Keys
M.I.A.
Eminem
Beyoncé
Jay-Z
Lil' Wayne
La Roux
BEP (Well Fergie and Will.i.am)
Nas
Shakira
Rick Ross
Keri Hilson
Well basically all those he talks about on his site/twitter. And also many of those he collaborates with. So there's many haha.