Problem for me is, I've got the hardware and software(got it to try this) but haven't been good enough with VHDL to figure out how to interface it between that and Bitcoin.
hmmm, for testing I would probably get a UART core and feed the half baked hash, the initial nonce and the 256bit min hash value. It would do one set of parallel hash calculations for incrementing nonces and return the nonce with the lowest hash. This would make interfacing with bitcoin pretty easy, especially after svn r154.