I have a battery patterned one that looks kind of like JAileen's, but am wary of using it after it made a hole in one of my sweaters. Although that was probably my fault for trying to de-fuzz the sweater while it was on me rather than laying flat.
I also have a cheap plastic sweater comb somewhere, which seemed to work okay, although it takes a while if there's lots of de-frizzing to do.