Lots. Listening to music, going to shows, reading quality books, writing, journal-ing, doing artsy type stuff, being a radio DJ, and meeting new people. Oh, and obviously, learning my way around Drowned in Sound's brilliant office and website.
All over the place, but I suppose it's mostly concentrated in the rock/punk/alternative areas. Artists currently being rotated in my cd player include: sum 41, green day, sugarcult, damien rice, teitur, dave matthews band, the goo goo dolls, tonic, switchfoot, dido, josh kelley, guster, maroon 5, billy idol, stephen kellogg and the sixers, jimmy eat world, yellowcard, dashboard confessional, and too many others to list.