03/28/2008 02:45 am ET | Updated May 25, 2011

AmEx Runs "30 Rock"-Themed Commercials During Episodes

Figuring out where "30 Rock" ends and commercials begin requires a sharp eye thanks to American Express.

Recent episodes of the NBC series have been interspersed with the credit card company's so-called "podbusters": content segments featuring "Rock" cast members that appear right before the commercial break.

For instance, a viewer with an itchy trigger finger on TiVo's fast-forward button might have held off when "Rock" stars Jack McBrayer, Jane Krakowski and Scott Adsit appeared in a holiday-themed segment that had nothing to do with the episode's story line.

Keep reading about the commercials.

Watch an example from last night's episode:

American Express is trying out a new series of ads where they integrate "30 Rock" characters into the ad that plays immediately before or after the show's commercial breaks. Advertising becoming more like content? Sure sounds like it.

From NBC, 12/13