Best plate I've seen was on a C3 Corvette "VSS WVN"(ass man upside down)....Worst palte was on a late model Grand Am "4 Skin"
I had "XKE 425" On My `70 type, I wanted just XKE but it was taken....and i wasn't very creative back then. Also my MGA had "BOZO72" not really a vanity plate as it was just the stand issue plate they gave me, but it earned the car a nickname for life...I've now got historic plates on it.
I've always wanted to get some vanity plates for my current cars, but haven't gotten around to it.
XK8- Strt Shrk
Caddy- Chariot
MGB LE- Spook
Camaro- Firm