Oct 1, - Forgetting Sarah Marshall is another movie from Judd Apatow's apart when his girlfriend the TV-actress Sarah Marshall (Kristen Bell) dumps him. Especially the additional longer yoga-scene smells more like a deleted. Forgetting Sarah Marshall is a American romantic comedy film directed by Nicholas Stoller and starring Jason Segel, Kristen Bell, Mila Kunis and Russell Brand. . from the bar. Kristen Wiig (unrated version) as Prana: A yoga instructor.