Virginia has more vanity plates than any other state-probably because they only charge $10 for the fun. I almost did it but then I thought that it was kind of a silly way to spend $80(Colorado's fee then) and I found out that there was a wait of several months and decided to not be so vain but continue being impatient.
I've got "STLHD" (Steelhead...you know, the fish.) Out here it makes sense and people know what it means. AK charges a one-time $30 fee, and your plates are prorated for the year and make of vehicle you own.
Before this, I had "FLYTYR" and "TYFLYS" AK only gives you six characters, so it kinda ties your hands with what you can do.
Hawaii is a one time fee of $25. My friend came across a twin turbo Porsche on the freeway in California that had the plate WHYTRY on it. He tried with his Toyota Supra. He told me all he heard was a WHOOSH and the Porsche was gone.