(Season 6, Episode 23) is a pivotal episode of Futurama that finally explains why the brilliant Professor Farnsworth employs the notoriously incompetent Dr. Zoidberg. First airing on August 18, 2011, it was nominated for a Primetime Emmy Award for Outstanding Animated Program. Plot Summary
Flashbacks reveal that Farnsworth and Zoidberg met while working for Mom's corporation on a mission to hunt a Tritonian Yeti for biological weapons research. [S6E23] The Tip of the Zoidberg
Believing the Professor had contracted terminal "hyper-malaria" during the mission, Zoidberg agreed to a mercy-killing pact: he would kill the Professor if symptoms ever surfaced. (Season 6, Episode 23) is a pivotal episode