Penny tries to throw a wrench into Leonard's plan to be a sperm donor for her ex-boyfriend; Wolowitz, Bernadette, Anu and Koothrappali turn Koothrappali's canceled bachelor party into a couple's trip aboard the "vomit comet."
Director:
Mark Cendrowski
Cast:
Johnny Galecki
Jim Parsons
Kaley Cuoco
Simon Helberg
Kunal Nayyar
Mayim Bialik
Melissa Rauch
Keith Carradine
Brian Smith
Rati Gupta
Lindsey Kraft
Eric Nenninger