Trashy Reality-Based DVDs topic

Does anyone ever watch those trashy reality-dvds? I was at the store and I noticed a few titles on the shelf. I have never rented one but I was always curious about them.

Here are a few titles off the top of my head:
Girls Gone Wild
Bumfights
World Greatest Beatdowns
Girl Fights
Oakland Sideshows
Bareknuckle Beatdowns
Faces of Death

There are tons more. I like to hear if people can recommendations or if they can tell if I should stay away from certain titles

Faces of Death is pretty funny. Just about all of it is fake, but it's funny to show it to friends and tell them it is real just to see the look on their faces after watching it. I've been thinking about buying the volume I-IV collection here recently.