Important question: Do your vanity plates have a six or seven digit limit? With 7 digits, one can make up a million more words or thoughts or statements. 6 digits limits you.
I wanted SCHNELL (German word for FAST) but that's 7 digits. Had to abbreviate it with SCHNLL for Texas personalized license plate rules.
Here's a site with TONS of them:
http://pages.prodigy.net/pizzabagel/VanityPlates.htm