I don't know if it's been mentioned here or not, but have you seen the guy who sits ground-level along the first-base line during most Nats games? Apparently he's a season ticket holder who often gets up and dances while music is playing during the game, and when Mattheus comes out to Firework he has his own little routine that's hilarious if not a little freaky. Also he wears a single glove on his hand like Michael Jackson.
Oh, yes. His name is Tripp something or other. Really.
Dude is weird but harmless. I don't get people who dress up for games.