I keep thinking of things! There's an awesome group called Berlin-Style Ping Pong League (BSPPL): http://americantripps.com. It's a variation of ping pong designed for large groups. Even if you suck, it's a LOT of fun and a fantastic way to meet people. They have events 2-3 times per week, and there's even a league night (Monday nights) where you form teams and play. It's super fun! Check it out!