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That's really impressive -- a $225 GeForce 9800GX2 graphics card can buy you an MD5 brute force speed of 600M tries per second.

If you don't have an nVidia GPU handy, John the Ripper can also work: http://www.disenchant.ch/blog/teaching-john-the-ripper-how-t...

A simple google search for an online crack will also do just fine.