I got one for my wedding. I am pretty boring, so I really like making vanilla and chocolate. I don't make it very often, but it's really fun. It's pretty cool to do at a party; people like watching it come together!
I have one but I have yet to use it Mine came with recipes (its made by kitchenaid) so if you want any ideas I will be glad to give them. I also picked up a recipe card at williams sonoma for peppermint ice cream and I know I've seen Emeril and Rachel Ray make ice cream on their shows (search ice cream on the foodnetwork.com site)
We recieved one as a wedding present, and even though I haven't used it that often, I really like it.
If you like Frosties from Wendy's then I have a recipe that is identical. I will be happy to share it. I have also made peach and strawberry and both have turned out well.