Brains! If I counted correctly, and I don’t really think I did, the third panel of this strip is indeed the 1000th comic panel on this site. For more retarded statistics like this one, scroll down to the anniversary blog post below!
Also, the awesome title “Flight of the Living Dead” has previously been used for a supposedly pretty bad movie – but also a pretty neat and unrelated webcomic. I say skip the movie but check out the comic.