The most awesome guy in the world!
When you met the guy so amazing that you can't say a word but "Gosh.."

A really short version of congratulations.
Congratulations>Congrats/Congratz>Gratz>Gz

slang for congratulations, used alot on diablo II

gz is a short word for congratulations or congrats. So really a short version of it. Used in all online RPG's such as Pristonale, WoW etc.

'Ground Zero'. Term frequently used when referring to the area of a Geocache.

grant zehler

gozu - has its roots on the word gosu