Olivia Munn in the 4th season premiere of Chuck
There’s so much fuss in the blogs about Olivia Munn starring in the (midseason) comedy Perfect Couples, but for an earlier look at her in action, she appeared in the season premiere of comedic spy thriller Chuck as a new Nerd Herder/CIA agent.
I don’t see why she shouldn’t reappear in a later episode since they don’t usually give a hottie such little screentime. Thus her appearance in the premiere is more of a cameo than “guest star”.