Interestingly enough, I enjoy Slashdot for exactly that reason (and the occasional insightful comment). I haven't found any other place on the net (yet?) with such witty geek humor.
I gave up Slashdot after a long time because of the predictable jokes, but do miss the genuinely clever ones. If the funny filter could somehow determine the difference between the clever stuff and the memes (or if there were two moderation options to separate them), it might be more useful.