The upside of lastfm is that I can discover new music daily ... the downside is that I have nowhere near enough time to listen to it all. Recent discoveries include a genre of music completely new to me called Zeuhl (basically late 60's/early 70's French avant garde), Art Zoyd, Henry Cow, Egg, and Giles, Giles and Fripp. I was very pleased to discover the latter as I knew Robert Fripp had been in a band before King Crimson but had never heard any of the material. So this album is definitely one to track down, and also the King Crimson back catalogue, which I have only on vinyl and haven't listened to for years ... so a bit of a prog rock/avant garde revival coming to an iPod near me soon.
By way of contrast I've also been re-discovering US indie/lo-fi material recently, particularly Matthew Sweet, Preston School of Industry, Tobin Sprout, and Stephen Malkmus and the Jicks. Some of these bands are new to me whereas others are those I listened to at the time but had long forgotten.
And having had my apetite for live music reignited when I saw The Damned a few weeks ago, I'm off to see Public Image later this month, and also Billy Bragg and the Doves.