Keith Olbermann was rushed into surgery Friday night to remove his appendix.

Olbermann missed his appearance on NBC's Football Night in America (not sure if the other hosts mentioned it or not because I'd rather watch Britney at the VMAs over and over again than watch a football game pre-show) and will also miss at least the first two nights of MSNBC's Countdown, tonight and tomorrow. His seat will be filled by Alison Stewart, though it's unclear right now if she'll continue the rest of the week if Olbermann needs more time to rest.

A spokesman for MSNBC says that Olbermann is "doing fine."

[via TV Newser]