Fred McGriff and Henry Rodriguez are the two that come to mind. No clue on the third. Rick mutha [expletive] Wilkins FTW! Is it weird that he was the only one I was certain of?
They've been doing this for as long as Groupon's been around. Yes, but that doesn't make it less awesome. Oh for sure, I've never been, but I plan on finally taking them up on it.