Over a decade ago, "Glee" actor Grant Gustin guest starred on an episode of the successful but fledgling CW series "Arrow," throwing Stephen Amell's Emerald Archer together with an awkward ...

We may receive a commission on purchases made from links. Morena Baccarin has been acting for decades and, for lack of a better way to put it, has a lot of street cred with nerds (complimentary).