jonstewart1.jpgJon Stewart told his staff this afternoon that he’s signed a two-year contract extension that will keep him at Comedy Central through Dec. 31, 2010. Since the length of the extension coincides with the 2010 expiration of David Letterman’s deal at CBS, it’s already fueling speculation (see Broadcasting & Cable here) that the Daily Show host could be in line to take over at CBS if Dave exits after his current deal is up. Now, if only there were some way Stewart could get out of hosting the Oscars again. See my previous, Jon Stewart Invited Back To Host Oscars.