Who exactly is the CONMAN? I don't know, but he does have some very funky t-shirts on offer:

CONMAN.tv T-Shirts : http://www.conman.tv/t-shirts.asp

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Updated 2021 : note that the above post is out-of-date, given this post was originally published in 2006, but is left here for archival purposes. I have unlinked the external website as it is now dead.