When CBS’ The Big Bang Theory was revived for two seasons last year, and the cast signed on for new salary agreements, many believed the 12thseason (this coming season) would be the last. Not so. At CBS’ upfront breakfast, entertainment president Kelly Kahl said they were all in for many seasons to come. The show currently boasts the highest-paid quintuplet of actors on TV, which paychecks hovering around $1 million an episode.