And at Dinosaur Comics.
And at xkcd.
(Hey, here's the permalink to today's QC strip.)
Post-April 1st edit: The three comics switched places for a day; Dinosaur Comics took over QC's site, QC took over xkcd's site, and xkcd took over Dinosaur Comics's site. (And I'm not entirely sure if Raven from QC was completely in character, either...)