Neat topic!
-ot.com
-faneditforum.com
-theshizz.org forum (for Ripplin's bad cosplay thread and the gif dump)
-A few of the cheezeburger sites (senor gif, ugliest tatoos, wedinator, comixed, oddly specific, and very demotivational)
-thedigitalbits
-highdefdigest
-tvpredictions.com
-espn.com
-yahoo.com for fantasy baseball and football
-sportsline.com for fantasy football
Oh, and every five minutes:
GIS