Actors in both ER and The Big Bang Theory
62 actors have appeared in both ER and The Big Bang Theory, across 610 episodes. The most-credited is Laura Cerón, Nurse Chuny Marquez in ER and Marta in The Big Bang Theory.
| Actor | In ER | In The Big Bang Theory | Eps | Eps |
|---|---|---|---|---|
| Laura Cerón | Nurse Chuny Marquez | Marta | 219 | 1 |
| Carol Ann Susi | Mrs. Clark | Mrs. Wolowitz | 1 | 39 |
| Kevin Sussman | Colin | Stuart Bloom | 2 | 25 |
| Sara Gilbert | Dr. Jane Figler | Leslie Winkle | 15 | 5 |
| Bob Newhart | Ben Hollander | Arthur Jeffries | 3 | 6 |
| Dean Norris | Bomb Specialist Clark | Colonel Williams | 1 | 6 |
| Vernée Watson | April Wilson | Althea | 2 | 5 |
| Alessandra Torresani | Kate Preston | Claire | 1 | 5 |
| Alice Amter | Dr. Miriam Nagarwala | Mrs. Koothrappali | 2 | 10 |
| Mark Harelik | James | Dr. Eric Gablehauser | 1 | 5 |
| Sara Rue | Jane | Dr. Stephanie Barnett | 1 | 3 |
| Michael Patrick McGill | Detective Ed Bernstein, Security #1, Officer Jeffries | Police Officer | 6 | 1 |
| Katee Sackhoff | Jason's Girlfriend | Katee Sackhoff | 1 | 2 |
| Lance Barber | Howard | George Cooper Sr., Jimmy Speckerman | 1 | 2 |
| Andrew Walker | Jack | Mike | 1 | 1 |
| Elizabeth Bogush | Debra Strickland | Dr. Catherine Millstone | 1 | 1 |
| Judy Greer | Tildie Mulligan | Dr. Elizabeth Plimpton | 1 | 1 |
| Kal Penn | Narajan | Dr. Campbell | 1 | 3 |
| Marcus Folmar | Foreman | Guard, Police Officer, Security Guard | 1 | 3 |
| Octavia Spencer | Maria Jones | Octavia | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.