Okay, I know this blog has headed toward vlogging lately, and I'll certainly try to reverse that trend in the near future.
Video mashups are something that happened upon me and a friend of mine during a late-night study session at the library. It's a relatively simple idea - take a music video that's already entertaining on mute and play a good but completely out-of-genre song while it plays.
A short tutorial in Windows Movie Maker later [why does everyone insist on using the blue screen and the basic white lettering?] I created a bunch of these. They're great fun, and with a whole iTunes library to sort through, as simple as finding the length of the video, trimming if necessary, and then looking up tracks by duration.