2Pac & Dr. Dre - "California Love"
The Mama's & the Papa's - "California Dreamin"
Phantom Planet - "California"
The Decemberists - "California One/Youth and Beauty Brigade"
Led Zeppelin - "Going to California"
Rufus Wainwright - "California"
Joni Mitchell - "California"
Ryan Adams - "My California Love"

My favorite though, the aforementioned...
Notorious BIG - "Goin' Back to Cali"