Simpsons' Greatest Guest Voices

Simpsons Guest Voice Appearance: Gillian Anderson and David Duchovny
TCFFC / The Simpsons / Fox

Gillian Anderson and David Duchovny
Fox found true broadcasting synergy by combining its cartoon hit with another popular network show, The X-Files. In this Season 8 episode, "The Springfield Files," agents Mulder and Scully come to town to investigate Homer's claim that he met a glowing green alien in the woods.

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