I have a few RiffTrax episodes, some of them are pretty spotty performances. My particular favorites were of The Crystal Skull and The Room. I wanted them to shred Twilight to pieces, but unfortunately it wasn't nearly as funny or cutting as I thought it would be. I love Mike Kevin and Bill, their wit and their timing, but if you're looking for something a little truer to MST3K form, look up Cinematic Titanic.