THE BIG BANG THEORY Season 4 Episode 18 The Prestidigitation Approximation Photos

THE BIG BANG THEORY Season 4 Episode 18 The Prestidigitation Approximation Photos

“The Prestidigitation Approximation” — Leonard (Johnny Galecki, right) must choose between new girlfriend Priya (Aarti Mann, left) and his friendship with Penny. Meanwhile, Howard drives Sheldon crazy with a magic trick, on THE BIG BANG THEORY, Thursday, March 10 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Photo: Monty Brinton/CBS ©2011 CBS Broadcasting Inc. All Rights Reserved

THE BIG BANG THEORY Season 4 Episode 18 The Prestidigitation Approximation Photos

“The Prestidigitation Approximation” — Leonard must choose between new girlfriend Priya and his friendship with Penny (Kaley Cuoco, right). Meanwhile, Howard (Simon Helberg, left) drives Sheldon (Jim Parsons, center) crazy with a magic trick, on THE BIG BANG THEORY, Thursday, March 10 (8:00-8:31 PM, ET/PT) on the CBS Television Network.  Photo: Monty Brinton/CBS ©2011 CBS Broadcasting Inc. All Rights Reserved

THE BIG BANG THEORY Season 4 Episode 18 The Prestidigitation Approximation Photos

“The Prestidigitation Approximation” — Leonard (Johnny Galecki, right) must choose between new girlfriend Priya (Aarti Mann, left) and his friendship with Penny (Kaley Cuoco, center). Meanwhile, Howard drives Sheldon crazy with a magic trick, on THE BIG BANG THEORY, Thursday, March 10 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Photo: Monty Brinton/CBS ©2011 CBS Broadcasting Inc. All Rights Reserved

THE BIG BANG THEORY Season 4 Episode 18 The Prestidigitation Approximation Photos

“The Prestidigitation Approximation” — Leonard must choose between new girlfriend Priya and his friendship with Penny. Meanwhile, Howard (Simon Helberg, center) and Raj (Kunal Nayyar, left) drive Sheldon (Jim Parsons, right) crazy with a magic trick, on THE BIG BANG THEORY, Thursday, March 10 (8:00-8:31 PM, ET/PT) on the CBS Television Network.  Photo: Monty Brinton/CBS ©2011 CBS Broadcasting Inc. All Rights Reserved

THE BIG BANG THEORY Season 4 Episode 18 The Prestidigitation Approximation Photos

“The Prestidigitation Approximation” — Leonard (Johnny Galecki, right) must choose between new girlfriend Priya and his friendship with Penny (Kaley Cuoco, left). Meanwhile, Howard drives Sheldon crazy with a magic trick, on THE BIG BANG THEORY, Thursday, March 10 (8:00-8:31 PM, ET/PT) on the CBS Television Network.  Photo: Monty Brinton/CBS ©2011 CBS Broadcasting Inc. All Rights Reserved

THE BIG BANG THEORY Season 4 Episode 18 The Prestidigitation Approximation Photos

“The Prestidigitation Approximation” — Leonard must choose between new girlfriend Priya and his friendship with Penny (Kaley Cuoco, second from right). Meanwhile, Howard (Simon Helberg, far left) and Raj (Kunal Nayyar, far right) drive Sheldon (Jim Parsons, second from left) crazy with a magic trick, on THE BIG BANG THEORY, Thursday, March 10 (8:00-8:31 PM, ET/PT) on the CBS Television Network.  Photo: Monty Brinton/CBS ©2011 CBS Broadcasting Inc. All Rights Reserved