The Big Bang Theory

Laura Spencer as Emily Sweeney 17 17 episodes Aarti Mann as Priya Koothrappali 12 12 episodes Kate Micucci as Lucy 8 8 episodes Laurie Metcalf as Mary Cooper 14 14 episodes Sara Gilbert as Leslie Winkle 9 9 episodes John Ross Bowie as Barry Kripke 25 25 episodes Brian George as V.M. Koothrappali 16 16 episodes Travis Schuldt as Eric 1 1 episode Octavia Spencer as Octavia 1 1 episode Michael Trucco as David Underhill 1 1 episode Summer Glau as Self 1 1 episode Jodi Lyn O'Keefe as Mikayla 1 1 episode Lewis Black as Professor Crawley 1 1 episode Elizabeth Bogush as Catherine Millstone 1 1 episode Yeardley Smith as Sandy 1 1 episode Julio Oscar Mechoso as Officer Hackett 1 1 episode Judy Greer as Elizabeth Plimpton 1 1 episode Steve Wozniak as Self 1 1 episode George Takei as Self 1 1 episode Eliza Dushku as Angela Page 1 1 episode Rick Fox as Glenn 1 1 episode Jessica Walter as Mrs. Latham 1 1 episode Kimberly Kevon Williams as Vicki 1 1 episode Andrew W. Walker as Mike 1 1 episode Emma Degerstedt as Emma 1 1 episode Peter Onorati as Angelo 1 1 episode Brian Patrick Wade as Kurt 3 3 episodes Erin Allin O'Reilly as Cheryl 2 2 episodes James Hong as Chen 2 2 episodes Stephen Root as Dan 2 2 episodes LeVar Burton as LeVar Burton 3 3 episodes Dakin Matthews as Santa Claus 2 2 episodes Jim Meskimen as Minister 2 2 episodes Elena Campbell-Martinez as Maria 2 2 episodes Alex Ball as Waiter 2 2 episodes Alessandra Torresani as Claire 5 5 episodes Judd Hirsch as Alfred Hofstadter 2 2 episodes Annie O'Donnell as Mrs. Lorvis (voice) 2 2 episodes Molly Morgan as Hostess 2 2 episodes Vernee Watson as Althea 5 5 episodes Dean Norris as Richard Williams 6 6 episodes Katie Leclerc as Emily 2 2 episodes Riki Lindhome as Ramona Nowitzki 3 3 episodes Carol Ann Susi as Debbie Wolowitz (voice) 40 40 episodes Casey Sander as Mike Rostenkowski 6 6 episodes Margo Harshman as Alex Jensen 4 4 episodes Mark Harelik as Eric Gablehauser 5 5 episodes Kimberly Brooks as Computer (voice) 3 3 episodes Michael J. Massimino as Michael J. Massimino 6 6 episodes Swati Kapila as Ruchi 3 3 episodes Stephen Merchant as Dave Gibbs 3 3 episodes Marcus Folmar as Security Guard 3 3 episodes Ira Flatow as Ira Flatow 3 3 episodes Sara Rue as Stephanie Barnett 3 3 episodes Katee Sackhoff as Self 2 2 episodes Ed Lieberman as Announcer (voice) 5 5 episodes David Trice as Waiter 2 2 episodes Josh Brener as Dale 2 2 episodes Kevin Brief as Security Guard 2 2 episodes Robert Clotworthy as Astronaut (voice) 4 4 episodes Lance Barber as George Cooper 2 2 episodes Lio Tipton as Analeigh Tipton 2 2 episodes Bill Nye as Bill Nye 2 2 episodes Neil deGrasse Tyson as Neil deGrasse Tyson 2 2 episodes Ian Scott Rudolph as Captain Sweatpants (uncredited) 3 3 episodes Courtney Henggeler as Missy Cooper 2 2 episodes Jerry O'Connell as Georgie Cooper 3 3 episodes Kathy Bates as Mrs. Fowler 3 3 episodes Teller as Larry Fowler 3 3 episodes Keith Carradine as Wyatt Teller 5 5 episodes Wil Wheaton as Wil Wheaton 17 17 episodes Chasty Ballesteros as Karen 2 2 episodes Regina King as Janine Davis 6 6 episodes Pamela Adlon as Halley Wolowitz (voice) 10 10 episodes David Theune as Dr. Graybel 2 2 episodes Kal Penn as Kevin Campbell 3 3 episodes Sean Astin as Greg Pemberton 3 3 episodes Michelle Arthur as Mrs. Petrescu 2 2 episodes Lauren Lapkus as Denise 8 8 episodes Joshua Malina as President Siebert 13 13 episodes Bob Newhart as Arthur Jeffries 6 6 episodes Kevin Smith as Kevin Smith 2 2 episodes Pasha D. Lychnikoff as Dimitri 5 5 episodes Caleb Pierce as Jess 2 2 episodes Brian Thomas Smith as Zack Johnson 11 11 episodes Rati Gupta as Anu 9 9 episodes Lindsey Kraft as Marissa Johnson 2 2 episodes Ellen DeGeneres as Ellen DeGeneres 2 2 episodes George F. Smoot as George F. Smoot 2 2 episodes Brian Posehn as Bert Kibbler 15 15 episodes Stephen Hawking as Stephen Hawking 7 7 episodes Christine Baranski as Beverly Hofstadter 16 16 episodes