haven't seen one, but I've noticed a lot of ebay domain auctions with fake
PR
you follow their link and it's some godaddy screen shot of a parked page with a
PR 5 .. but when you actually surf to the domain, it's 0
don't know how they do it, it looks real, it's not a screengrab.
haven't seen a script to check it...do they mess with your google toolbar somehow?