there really isn't anything out there, probably 'cos olympics are only every 4 years and well, lets face it, most olympians are not well known or overly popular unless the're like world wide superstars.
the're mostly amatuers.
I collect promo cards and over the years i've picked up some olympic stuff, lots of your uncle toby type cereal cards ect, my fav' set is probably an american set of about 30 cards of US olympians from 1982, it was brought out by M&Ms and has cassius clay and big yank stars of the past but that's about all i can think of.
collectacard brough out some cards for '96 atlanta, there were nice over sized promo's that aren't easy to complete but quite boring really.