Satire

Actors spoofing the film industry (quicktime movie; profanity)

Britain's answer to the Onion [carolyn] (An example.)

Canadian snacks

Behind The Music That Sucks (offensive)

Stapler fan site

British devices you wish existed (offensive)

Like http://www.theonion.com, but parodying only religion

Why the Federal Government should probably exercise eminent domain over web sites:

Eugene Mirman sings your favorite hits
(From another list: "He actually has a degree in humor from Hampshire college -- his final project was a 2-hour stand-up comedy show, open to the whole campus, followed by an intensive analysis on why it was, exactly, that each of the things he'd said was funny.")