Olivia Munn testing her inner spy in "Chuck"

Actress-model Olivia Munn has a guest gig in NBC's comedy-spy series "Chuck", episode airs Sept. 20.

Olivia will play the role of an impossibly cool, smart, and pretty CIA agent who intimidates and schools Chuck and Morgan. Also cast in this episode is Rocky IV villain/Expendable star Dolph Lundgren.

Expect more sexy-hot guest this season!!

[Photo courtesy by PacificCoastNews.com]