Yeah, there are a couple of people who are hilarious. Many people try way too hard, though. What I've noticed is that when someone who always answers questions with a lot of insight says something funny or sarcastic, it is actually funny. Whereas someone who is constantly trolling and half-assing questions isn't that funny because it's incessant.
One of the funniest people I know here is ketfoen. So cheerful and goofy, it's hard to be mad or upset when I see him posting, making jokes. Others that I thought were funny are already gone, like goldgunsgirls.