Season 4

Season 4: 2010-2011


Season 4 of The Big Bang Theory returned to television on September 23rd, 2010 and contained 24 episodes.

Cast
Principal Cast
 * In order of character appearances
 * Johnny Galecki as Leonard Hofstadter (24/24)
 * Jim Parsons as Sheldon Cooper (24/24)
 * Simon Helberg as Howard Wolowitz (24/24)
 * Kunal Nayyar as Rajesh Koothrappali (24/24)
 * Kaley Cuoco as Penny (22/24)
 * Melissa Rauch as Bernadette Rostenkowski (15/24)
 * Mayim Bialik as Amy Farrah Fowler (15/24)

Regular Cast
 * In order of character appearances
 * Aarti Mann as Priya Koothrappali (10/23)
 * Carol Ann Susi as Mrs. Wolowitz (7/23)
 * Brian Smith as Zack (3/23)
 * Kevin Sussman as Stuart (3/23)
 * Alice Amter as Mrs. Koothrappali (2/23)
 * Brian George as V. M. Koothrappali (2/23)
 * John Ross Bowie as Barry Kripke (1/23)
 * Wil Wheaton as Himself (1/23)
 * Laurie Metcalf as Mary Cooper (1/17)
 * Vernee Watson-Johnson as Althea (1/23)
 * Joshua Malina as President Siebert (1/17)