I tend to like stuff by Will Wood. Always good enough to not skip a song, enough variety I'm not tempted to change to something else, large enough discography to not get distracted by repeat tracks, and insightful lyrics that have "the hacker way" if that makes any sense. Also partial to wendy carlos or whatever The Current (local MN radio station that has really good taste and pulls some deep cuts pretty often) plays

ETA: I forgot to mention gorillaz. Great programming music, and seems to give me good ideas.