I went a couple of years ago and thought it was just ok. There were a few cool framebuilders there, like Stephen Bilenky, and there were one or two booths with large assortments of cycling clothes at great prices. Otherwise, it was just what it's billed as: a swap meet. Lots and lots of very crowded, very jumbled booths of very used gear.
Regina's also been, but I don't remember what she thought of it.