I use my Power Mac G4 for web browsing, e-mail, some light gaming (Fable, Battlefront) (and a candidate for MOS 2.6 hopefully0
My iBook for music and public web browsing in cafes and such
My Powerbook for light gaming, web and music
My A3000, nothing atm, its in NY getting fixed. When I get it back, probably for fun, coding and light web browsing