Culture and Philosophy. That pretty much covers everything, since everything can fall into one of those categories. If it's hobbies that you expect, then tough. Ask me. I dare you. ASK ME!
Absolutely everybody in the world. You can never have too many friends, and as for enemies, wheres the fun without the risk? Unfortunately theres that little nag called mortality which gets in the way. Next on the list is Satan but its a given that I'll meet him after my death anyway. Providence would also be very illuminating, she seems to be a bit shy and I can never seem to find her anywhere.
Modern: The Killers, Editors... you get the point. Past: The Clash, Aerosmith, Dire Straits, Blondie, AC/DC, Guns n' Roses, The Red Hot Chilie Peppers, Bryan Adams, The Who, Bryan Ferry, Fleetwood Mac, Bruce Springsteen, David Bowie, Queen, R.E.M., Van Morriston, The Pretenders, Patti Smith and much much more.
Lord of the Rings for the roller coaster ride, The Notebook for the spinal shivers, A Knight's Tale for a bad stomach and Shrek for a cheesy grin.
The Count of Monte Cristo (must read), The Stars' Tennis Balls (for the people who are failures and can't read the former), The Bible (for the experience and life lesson of how to tell a lie convincingly)
Humans as a race. What better role-model is there? It has it's faults but it inevitably succeeds. Aside from that Heroes is also a pathetic TV series.