ILM Rough Guide is a wonderful reference to "Scenes" and what songs to look for. I'll be scouring through this more myself but it looks very promising! http://www.base58.com/ilx/ilm/ilmroughguide.html Also found John Peel's Festive 50 by Year which also looks like a good read. http://www.festive50.com/
Brazilian Blog with all kinds of genres. Some International of course, but most in English, and with few live shows too. Lots of stuff! http://gamesediversoes.blogspot.com/
Links for Metal, Hard Rock, and Nu-metal. Some discographies as well (George Thorogood, Van Halen, AC/DC, Iron Maiden...) http://linkyourstuff.blogspot.com/
Wow the Grunge blog I've always dreamed of. You will need Firefox & Java Enabled to see any of the archives (?) but do so! Only negative is they are 128 bit rate rips. http://discosgrunge.blogspot.com/
Best U2 blog? Pretty sure. Tribute Comps, live shows, and all 30 fruit flavored mix cd's (nearly 4gb of b-sides, remixes & demos)! http://u2-thespiralstaircase.blogspot.com/