GPO (11/24/2010)
You don't even need to use the word 'GO'. You can set the batch separator to be some string other than 'GO' in the SSMS options. Inveterate prankster and SQL guru in his own right, Rob Farley once showed me a really quite awful but just as funny practical joke you can play on your colleague who is in the habit of leaving his or her workstation without locking the screen. Apparently, and I'm not in any way advocating this, you'll cause some pretty disconcerting and inexplicable error messages if you change GO to oh let's say... SELECT. Your friend may spend hours trying to find the source of the problem.
Well now that's just terrible! Funny, but terrible. I hope no one I work with reads this and gets any ideas!