To be fair, this is a concept I stole from Douglas Coupland, but I'm a new guy here, and I have to work somehow. anyway, mine would most likely be:
1. The Simpsons, pre-2000
2. Philadelphia celebrities and history
3. U.S. Rap Music 1987-1993
4. Things that Keith Richards has said/eaten/smoked/drank in interviews
5. U.S. Civil War history
bonus
6. Bruce Springsteen 1975-79
7. Marvel comics Contradictions
I'm sure this is off, but it's the best to my immediate estimation. Yeah, I'm well aware of how utterly nerdy these are, but those are the areas of my expertise. Weirdly enough, the list gets a lot nerdier after that.
Anyone else?