I tend to find if anything's the least bit funny I'll belt out laughing. Sure, the jokes might be really mature in a lot of shows, but what's the harm in going with it? It doesn't kill a person to laugh every once in a while.

As far as television and the like goes (and I'll include net shows as they're basically the same, just over the internet), things like Black Adder, Family Guy, The Simpsons, Futurama, South Park, American Dad, Red vs Blue, The Jace Hall Show and many others are always for a laugh.

The only real problem is that I rarely watch television, so I only catch a few episodes of most of these shows. With the exceptions of Red vs Blue and The Jace Hall show which I can watch online easily enough to enjoy them regularly of course. I do enjoy humour that requires a little more knowledge to understand (especially in terms of geek jokes and the like), but even the stupidest of jokes will work for me.