Rumors/gossip:
http://www.thehollywoodalist.com/ The site is almost completely unnavigable -- at least it didn't work for me; you have to use the links at the bottom of the home page. Despite that, it's great fun. Lots of dirt about beards, merkins, drunks, junkies, and sluts.
Bad plastic surgery:
http://www.awfulplasticsurgery.com/ Again, very, very bad navigation -- but incredibly compelling. Tons of great before and after pics of boob jobs (Britney Spears, Jessica Simpson, Lindsey Lohan), collagen lips (everybody), face lifts (ugh -- Nicollette Sheridan), nose jobs (Natalie Portman, Michelle Pfieffer, etc.). Don't miss: Paris Hilton, Nicole Kidman, and Catherine Zeta Jones.
I was doing research for my novel. (Honestly!)