I love the Ultimate, it's a very physically demanding sport, and it's damn fun too. Frisbee Golf is very fun too, especially since you can play it almost anywhere. I also like just tossing the disc around with just a couple friends.
In addition to that, I am very proficient in spinning the disc on my finger, I can do it clockwise, counter clockwise, upside down, right side up, fast, slow, on any finger, toss it between fingers or back and forth on my hands...etc.
I have with me right now my 200 gram heavy weight disc, great for long distance throws into the wind. Regulation ultimate is 175 grams, I also have a lightweight 145 grams.
Too bad it's not very practical to play frisbee anywhere in the City, well, maybe at the common or the fens.
anyway, It's good stuff.