The Big Bang Theory Season 4 Episode 18: The Prestidigitation Approximation

The Big Bang Theory Season 4 Episode 18 can be watched on Thursday on March 10, 2011 at 8:00pm EST on WCBS (CBS) TV channel. Title of the brand new episode is: The Prestidigitation Approximation. Synopsis of the episode is: Leonard is forced to choose between Penny and his new girlfriend, Priya; Howard's magic trick drives Sheldon crazy.
The Big Bang Theory is an American sitcom created by Chuck Lorre and Bill Prady, both of whom serve as executive producers on the show, along with Steve Molaro, who is also one of the head writers. It premiered on CBS on September 24, 2007.
Set in Pasadena, California, the show is centered on five characters: two roommate Caltech geniuses, experimental physicist Leonard Hofstadter and theoretical physicist Sheldon Cooper; their neighbor across the hall Penny, an attractive blonde waitress and aspiring actress; and Leonard's and Sheldon's equally geeky and socially awkward co-workers and friends Howard Wolowitz, an Aerospace engineer and a non-PhD from JPL, and Rajesh Koothrappali, a particle astrophysicist postdoc also working at Caltech. The geekiness and intellect of the four guys are contrasted for comic effect with Penny's social skills and common sense. Three other supporting characters have also been promoted to main cast status for a few episodes: Leslie Winkle, a Caltech colleague of Leonard, Sheldon, and Raj; Bernadette, a microbiology student who works with Penny part time as a waitress; and Amy Farrah Fowler, a friend of Sheldon's.