18. Ian Scott Rudolph
Ian Scott Rudolph was relatively unknown before gaining recognition for his role in The Big Bang Theory as comic book store devotee Captain Sweatpants. And even then, his character’s lack of lines meant that he was uncredited until he finally spoke in his 11th appearance on the show. Any new devotees of the Captain, then, can search out Rudolph’s previous bit parts in the likes of The Middle and Shameless.
17. Alice Amter
If, after Mrs. Koothrappali first appeared in The Big Bang Theory, you were scratching your head as to where you’d seen her before, then it may have been in ER. It may also have been in The Mentalist, in which Alice Amter, who plays Raj’s overbearing mom, was cast as Marta. And after her time in Big Bang, you may very well have seen her in an episode of NCIS: Los Angeles, too.
16. Christine Baranski
Christine Baranski was quite the veteran screen and theater actress before her role as Dr. Beverly Hofstadter on The Big Bang Theory, having played main roles in late ’90s sitcom Cybil and Christmas classic How The Grinch Stole Christmas among others. And she’s kept herself busy since then, too. As well as appearing as Leonard’s rather cold mother in Big Bang, she took on a seven-year stint as Diane Lockhart in The Good Wife – a role that has earned her an incredible six consecutive Primetime Emmy nominations.