Good news, MST3K fans: Michael J. Nelson is back, with RiffTrax:

Do you feel that some of the movies coming out of Hollywood are just, well, missing something? At RiffTrax, you can download Mike’s running commentaries and listen to them along with your favorite, and not so favorite DVDs. It’s like watching a movie with your funniest friend.

The concept is simple; download an MP3 of Mike’s commentary and play it synchronized with the DVD. The first classic film to be “Riffed” is Roadhouse, and The Matrix is currently leading the poll to be next in line.