Marshall becomes obsessed with saving the environment after seeing a documentary on garbage. Ted runs into The Captain. Barney admits he has feelings for a woman.
Quest roles:
Charlene Amoia(Wendy), Bob Odenkirk(Arthur Hobbs), Jennifer Morrison(Zoey Pierson), Kyle MacLachlan(George Van Smoot), Nazanin Boniadi(Nora), Dan O'Brien(Meeker)