One terrific site I haven't mentioned yet is RotoGuru. Not only does Dave Hall post his thoughts on a variety of fantasy games (many of which he's had great success at), but the site has active message boards on many fantasy topics, and provides some really useful 'tools' to help evaluate daily and weekly match-ups for games like Rotohog and TSN. If you stop by Rotoguru, please remind Dave that as far as I'm concerned he still owes me $1,000 for passing me in the 2007 Rotohog Baseball Top 10 on the final day of the season.
Another site to check out is WaiverSharks, where Scott focuses on sleepers and prospects. Even if you do your own evaluation of players, sites like WaiverShark can be a terrific source of ideas.