First episode (2005): "Pilot" (Season 1, Episode 1)

Last episode (2013): "Finale" (Season 9, Episode 22)

What she's up to now (2020): Jenna appeared in shows like You, Me, and the Apocalypse and Splitting Up Together. She also wrote a book called The Actor's Life: A Survival Guide. Currently, she co-hosts a podcast called Office Ladies with Office co-star and BFF Angela Kinsey.