80's Rock Band
Yes, this will include Griffin. I'm really excited because I love a good theme like this. Some other ideas we tossed around include: The Village People (Patrick and I thought this was great, but just couldn't do that to a 13-year old Duncan), Scooby Doo, Willy Wonka, Chicago sports teams.
I like 80's Rock Band because it involves big, bad hair and the possibility of acid washed denim. Rock on!