Meet Goliath, a 20.2-pound cat who has been stealing cat food from Jadwiga Drozdek's house. The portly cat was finally caught when he grew too fat and became wedged in the doggie door!
Link (There's also a video of the interview with the woman there) | YouTube Link
See also: Neatorama's Top 15 Amazingly Fat Cats (and yes, Goliath would've made it at No. 14).
http://www.oregonlive.com/news/oregonian/index.ssf?/base/news/11685759354450.xml&coll=7