I lucked out, thanks to a tip from Sperhauk, and found 15 of the Rifftrax dvd's at a used cd shop in St Paul for $2.95 each. They're $9.95 on the Rifftrax site and cheaper on Amazon. I'd borrowed a few of them a couple of years ago and watched those without posting anything. Those ex-MST3K guys, Mike Nelson, Kevin Murphy and Bill Corbett, watch public domain shorts on Wide World Of Shorts. They make jokes about whatever pops up on the screen. There's a lot of jokes and they're a mixed bag. Not everyone is a gem but generally they're entertaining. They do a lot of these Rifftrax, most sold online at their site, and you can't always have quality with quantity. I've listened to some of the guys trax on the Harry Potter movies and just didn't think they were that funny.
The shorts on Wide World Of Shorts are all over the place in topic. I find the shorts almost as entertaining as the guys comments. Here's the ones I could find on YouTube. Maybe you'll get a laugh out of them.