Girl Talk has some great stuff, he's definitely talented and has an ear for mashing songs. Outta my hometown Minneapolis actually, if I remember correctly. A couple of other good ones are DJ Iller, and DJ Ryno. DJ rynos song "B$%&*es in black" is pretty catchy. Actual song title isn't edited like that, if you search for it. Just edited to keep it pg. You're welcome Dave
As suggested already, super mash bros is always good too.