Sometimes I think I watch way too much MST3k and Rifftrax. Maybe not. Watching Manos again. Rifftrax live version. It's hilarious. I wish Hulu had all seasons of MST3k. There's quite a few Rifftrax on there though, both Movies and Shorts.
I've been watching MST3k for a long time and I'm always riffing on movies and TV, even if it's good or bad.
My friends and I did some Mr. Rogers rifftrax. If I could figure out how to put the track to the actual episode, I'd post them. We did many in a day and I happened to be drinking during them. As the episodes went on, I got progressively drunk. It was a lot of fun.