Well, I'd say that honor goes to Teevee.org for their magnificent publication, the Television City Chronicle. The mimicry of the New York Times is dead on, as is the content (which there is a lot of). My favorite articles? "Brothers Suspected in Heartland Slayings"(and they even have a female crowd outside the jail demanding their release!), "Manic-Depressive With Blinky Light Saves London, Again", and "Cheerleader Saved; World's Fate Uncertain". Also a great lede: "Ruler of Make Believe Found Dead".
Sadly, Slashdot did not live up to past glories (OMG!!!PONIES!!!), and Google was reduced to, well, poop jokes. Better luck next year.