General ultimate stuff / blogs:
USA Ultimate - Our governing body.
RSD - It used to be a spam-filled usenet group. Now it is a well-trolled message board.
FFinder - Find frisbee ANYWHERE!!!
The Huddle - No longer updated, but there's a lot of great stuff here.
Sky'd Magazine - Is this really run by college players? It's so good.
Disc Videos - Best distraction ever.
Without Limits - A collaborative effort to foster the growth of women's ultimate.
Win the Fields - Oregon coach Lou Burruss's blog.
Maddog in the Fog - Anna Nazarov's blog.
Other college teams, vaguely organized by region:
Stanford Men's Ultimate - We're friends with them sometimes. Rarely. But we NEVER date them.
California Pie Queens
UCSB Burning Skirts
USC Hellions of Troy
Penn State ISIS
Tufts Elephant Women
Wisconsin Bella Donna
Texas Women's Ultimate
Iowa Saucy Nancy