The best thing about 6 is, because it's a cool music station, I know all the music they play must be cool -- so I don't have to worry about my musical credibility! Today I have liked Supersystem, Ladytron (who I already liked a bit, I think), Martha Wainwright (ditto), Marc Mulcahy, N.E.R.D., and Sons and Daughters.
But, hey, they were playing Joy Division's "Transmission" just now, and just as it went "live transmission", the audio stream cut out. You couldn't make it up.