Web/movie mashups. My favorites:
Harry Potterybarn.com
Il Huffington Postino
Slumdog Millionaire Dollar Homepage
Behind Enemy Bloglines
Schindler's Craigslist
Charlotte's WebCrawler
Freecreditreport.com Willy
And while not strictly adhering to the form, I also chuckled at "Bone Thugs & eHarmony". The best I could come up with for kottke.org is Girls Gone Wild: Kottke West, which is not so good.
Update: Duh, I totally forgot about Koyaaniskottke. Also: kottke.orgazmo, The Kottke Horror Picture Show, and Kottke Balboa. (thx, andy & charley)