is the 17th episode of the first season of How I Met Your Mother , originally aired on March 20, 2006. It's a key episode for character development, particularly for Marshall Eriksen , and marks the beginning of several long-running jokes. Plot Overview
"How I Met Your Mother" Life Among the Gorillas (TV ... - IMDb
: Ted struggles with the reality of a long-distance relationship while Victoria is in Germany. He worries about their future, especially when Robin calls him at 2:00 AM inviting him over. Notable Features & Trivia
: Marshall starts an internship at AltruCell (Barney’s company), which he initially hates because of his crude and obnoxious coworkers. To survive, he takes Barney's advice to "become the mask," adopting their "laddish" behavior to fit in.