For a good two years of my life just about every album I decided to download was discovered while wandering this board specifically, so there are too many to name here
A couple examples that spring to mind are a bunch of Goofle's favorite stuff (but not lana [puke]) like the auteurs and aesop rock is cool
I also checked out a ton of stuff that this guy raved about but he hasn't posted in 2 years so
Music Banter - View Profile: streetwaves
And then of course some cool experimental stuff that I got into from Frownland like This Heat and Madvillain.
Also Ninetales posts a ton of cool stuff in the ambienty genres and I've loved a lot of it
That's just off the top of my head