If you’re not in Europe, or you don’t have a TV (like me), you can watch the Eurovision semifinals and final on the Eurovision website. The final is on Saturday at 9pm Central European time (which is 3pm EDT, but you don’t have to watch it live).
Edit: If you watch it on the web you won’t be able to vote, though. Each country has its own phone numbers for voting and so they’re put on the screen by the national TV channels. (So we’re actually going to Dima’s to watch the final.)