ordered a Zvex Lo-Fi Loop Junky.
I think they're ridiculously overpriced but after waiting for one cheap to come along for a year or so, finally found one cheap. Probably not everyone's cup'o tea, but I'm an admitted loop addict.
here's some examples of them:
http://www.youtube.com/watch?v=hJoZW...eature=related
http://media1.zvex.com/lofi.mov
http://proguitarshop.com/store/loope...op-junky-p-666