My friend Tony and I were playing around with the California Personalized License Plate website, and we found that most of the good ones are not available:

ASL PLZ
DNT H8
HI HI
NOFTCHX
IH8PIGS
STOLEN
JACK ME

However, we did find some good ones still available:

URHAWT
THX NP
JAVSTAR
UROTAKU
IMSPDNG

and of course
DMVRULZ