I remember every joke I've ever heard. It's a gift...and a curse. I wish I could keep information about science,literature, or politics in my brain, but nothing sticks. Except jokes. Tom on the other hand has room* for only one joke and sometimes I have to remind him to tell it. So here it is for your reading pleasure - try not to steal it though, like I said, this is the only one he's got.
Darth Vader says to Luke Skywalker: I know what you are getting for Christmas Luke says: How do you know that? Darth Vader says: I felt your presents.