I've met a few through interviews in the past, both in-person and via telephone. Big Boi (from Outkast), Ken Casey of the Dropkick Murphys, Colin Hay, Quincy Jones, RedOne, Janelle Monae, Carah Faye (Shiny Toy Guns) and a few NASCAR drivers are among my favorites. Also got to talk to Daniel Ingram before... guess he isn't famous IRL per se, but he probably counts on a forum like this!