On The Big Bang Theory
's February 10 episode, Leonard (Johnny Galecki
) shares a kiss with a wealthy benefactor to the physics department - played by Jessica Walter
), age 70. "The amount of making out I do on this show is ridiculous," says Johnny, 35. He's not kidding. Next up: Aarti Mann returns as Raj's sister Priya, who'll now be dating Leonard after their previous one-night stand. "Raj is not going to be very ..."