Baseball season opens today, and one of the things brought to mind by baseball is the classic "Who's on First?" routine made legendary by Abbott and Costello. That timeless routine is celebrating its 75th anniversary this year, and is still as funny as when it was first performed.

Now, some may say the classics don't need updating, but 'Late Night with Jimmy Fallon' did a pretty good job, incorporating Billy Crystal and Jerry Seinfeld into the fun...watch and enjoy as you get ready for Opening Day!