As if there wasn't reason enough to attend, WEC Featherweight champion Urijah Faber will be in attendance and signing autographs/taking pictures with fans. I believe - but need to confirm - that he'll be doing so from 4pm to 6pm the day of the fights at the Patriot Center. Faber will join WEC Welterweight champion Carlos Condit and UFC middleweight contender Nate Marquardt.
Just remember: MMA in its upper echelons is still accessible. I encourage everyone to take advantage of that access when you can. If you're in the DC area (or want to make the trek), this is the perfect opportunity.