I have CY GY but first tried to get CY GUY and it was taken (this was in '97 I think). Oddly enough the DMV told me at the time that the person that had it lived in Seattle.
I know when I looked into getting a plate for my dad a few years back, there were some very good plates that were suprisingly not taken but I can't recall what they were specifically now. The best thing to do is see if you can get some patient person at the DMV (hahaha) that will look up your possible choices so you can rule them out before you fill out the app and have to keep resubmitting it. By the way, we may have better chances of winning the National Championship this year than you do of finding a patient DMV worker:) **
There is also a waiting list you can supposedly be put on at the DMV but you may never get the plate since most plates just transfer to your new vehicles now.
**Disclaimer: No offense if any of you work at the DMV, I'm just stereotyping. I truly do love waiting in long lines on a day off of work;) | 
