NCIS star Michael Weatherly takes viewers into the set of the CBS hit in a new clip promoting his directorial debut tomorrow night. What can we expect?

Probably another terrific episode of NCIS. Very few of the 170+ installments to date have been mediocre, so that's a safe bet. But it also leaves Michael nervous.

Taking the reins at the show's peak popularity, not to mention struggling with the challenges of acting and directing simultaneously, was a formidable challenge.

Still, he clearly reveled in the creative process, as Tony and as Michael. Here's a fun behind-the-scenes look at the March 1 episode, "One Last Score" ...

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.