Simon Cowell returns to judge The X Factor - San Francisco auditions - Video

Simon Cowell was back the judge The X Factor auditions in San Francisco today. He had to skip the Kansas City stop because he was sick and Louis Walsh filled in for him.

He tweeted that he was "glad to be back at work" earlier today.

Here are some pictures of Demi Lovato and Britney Spears with video:

Glad to be back at work. @TheXFactorUSA

— Simon Cowell (@SimonCowell) June 16, 2012

Via LOTRAF