The Last Laugh
Show: Batman: The Animated Series --> Season: 1 - Season 1
AirDate: 9/22/1992
Runtime: 22
Voting: 7.4 (27)

Overview: The Joker employs a lethal mind-altering laughing gas to transform the citizens of Gotham into total fools.
Mark Hamill
The Joker (voice)
Mari Devon
Summer Gleeson (voice)
Richard Moll
Computer (voice)
Pat Fraley
Jest (voice)