Maybe this is a homer answer, but I like to say Joe Carter should be in the hall. 396 career home runs, 5x All-Star, 10 25+ home run seasons, and of course one of the most famous home runs in baseball history and the greatest moment in Canadian baseball history (other than the diving catch made this year in the LLWS!).
Again, probably a homer answer, but I think he deserves a spot. Plus, I didn't want to go with the typical Pete Rose or Barry Bonds answer!
I will leave my signature the same until the Toronto Maple Leafs miss the Stanley Cup playoffs. In short, I will never change my signature.