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The Muppet Show: Season4 | Episode20
Alan Arkin
Alan accidentally drinks Bunsen Honeydew’s Jekyll-and-Hyde potion, and turns into a rampaging monster. He runs amuck, as the ultra-cute Bun-Bun Brothers sing “Zip-A-Dee-Doo-Dah.” When Kermit catches Alan in a net, he turns back into himself. Soon, Kermit takes a sip of the potion himself.
S4 - E1Dudley Moore Oct. 29, 1979
S4 - E2Crystal Gayle Nov. 02, 1979
S4 - E3Victor Borge Nov. 09, 1979
S4 - E4Beverly Sills Nov. 16, 1979
S4 - E5Shields & Yarnell Nov. 23, 1979
S4 - E6Kenny Rogers Nov. 30, 1979
S4 - E7Linda Lavin Dec. 07, 1979
S4 - E8John Denver Dec. 14, 1979
S4 - E9Arlo Guthrie Dec. 21, 1979
S4 - E10Liza Minnelli Dec. 28, 1979
S4 - E11Dizzy Gillespie Jan. 04, 1980
S4 - E12Phyllis George Jan. 11, 1980
S4 - E13Lola Falana Jan. 18, 1980
S4 - E14Dyan Cannon Jan. 25, 1980
S4 - E15Anne Murray Feb. 01, 1980
S4 - E16Jonathan Winters Feb. 08, 1980
S4 - E17Christopher Reeve Feb. 15, 1980
S4 - E18Lynda Carter Feb. 22, 1980
S4 - E19Mark Hamill Feb. 29, 1980
S4 - E20Alan Arkin Mar. 07, 1980
S4 - E21Doug Henning Mar. 14, 1980
S4 - E22Andy Williams Mar. 21, 1980
S4 - E23Carol Channing Mar. 28, 1980
S4 - E24Diana Ross Apr. 04, 1980