My new site has launched! Upcoming.org is a collaborative event calendar, where anyone can add the music/sports/arts/film/drama events they're going to, find out who's going to the same events, and browse the event listings of other people with similar tastes. After adding events to your list, you can use the generated RSS feeds to list them on your own weblog. By adding people to your friends list, you can track your friend's events as they add them (also available via RSS).
Along with a group of about 20 friends, I've been using the site to manage my concerts and find new concerts for the last couple weeks. The feedback has been very positive... Sign up, add an event or two, and let me know what you think!
And if you're in the Los Angeles area, come out tonight for drinks to celebrate.