Earlier today, NBC's website was hacked. The site returned to normal for a few minutes, but now even the homepage is having problems. This afternoon, users who clicked on the "Shows" or "Full Episodes" tab were shown a black page with glowing lights, loud music, and references to Guy Fawkes Night, which is celebrated on November 5th.  NBC's mobile landing site, Saturday Night Live page, 30 Rock clips, and NBC Sports Rotoworld were also hacked.

Despite the Fawkes reference, Anonymous has not yet taken credit for the hack. A message on the site said "Hacked by pyknic." It's also unclear why NBC was a target. Not a Louis C.K. fan, perhaps?

The defaced page claimed that user info was exposed and passwords were dumped. We've reached out to NBC for comment and will update you as soon as we learn more.

UPDATE 2.30 p.m: The hacker "pyknic" has also taken down the Lady Gaga fansite: GagaDaily.com.

UPDATE 6 p.m.: An NBC representative says the site has been almost entirely restored.

If you have any information about the hack, please email Tips@Betabeat.com.