Yeah, those Rabbit toys are great. There are spin-offs of the original Jack Rabits though. My wifey bought one from one of those women sex toy parties, it's this one here -
http://nawtythings.com/toys/se0656-22.html
Here's a link to the Jack Rabbit -
http://nawtythings.com/toys/se0610-00.html
There's also cordless versions of the Jack Rabbit. The girls in Nasty Dollar's "We Live Together" use them from time to time.
If you wanna find other places to buy the Jack Rabbit, just look up Jack Rabbit Vibrator in Google. I've never dealt with the store that I linked to, it's just one of the first places that I found that had good prices.