Check out Fake Text TGP. It's cheap and extremely easy to use. But the features are very limited. I like that you can just fill it up with hosted galleries and let it run.
http://www.faketexttgp.com
I'm running it on a few sites. Here's some samples:
http://www.theslutswelove.com
http://www.whishlist.com
http://www.hootymcboobs.com