About 10-12 of us at the college of pharmacy got together to have a christmas party.  We had an awesome dinner and then sat around to play games.  While we were playing catchphrase, Dan made a "ha ha" quote from Nelson on the Simpsons.  I started laughing because I thought it was so funny.  Then he started laughing and then we both couldn't stop.  The rest of the partygoers watched us laugh at our own private joke for a good 3-5 minutes.  That's how I always want to remember Dan, as someone who made everyone laugh.