Hey Joan, Bill here with Superman, Ra's al Ghul, Tim Drake, and most importantly to Guy, Kyle Rayner.
I just hit up the email Meesh sent us, but I was thinking Kyle has been a GL for about five years now which should give Guy plenty of time to have been around before him. I'd like to develop the sort of partnership/friendship they have in the comics, and... yeah. There's just so much I may have to email you separately or try to catch you on AIM to figure things out.
I figure it's likely that Superman has run into Guy on a few occasions. The big blue boyscout is probably the pinnacle of patience around him and virtually immune to his antics, lol.