Known for Acting

Jerry Nelson (July 10, 1934 – August 23, 2012) was an American puppeteer, best known for his work with The Muppets. Renowned for his wide range of characters and singing abilities, he performed Muppet characters on Sesame Street, The Muppet Show, Fraggle Rock, and various Muppet movies and specials. Description above from the Wikipedia article Jerry Nelson, licensed under CC-BY-SA, full list of contributors on Wikipedia.
2014
as Announcer (voice) (uncredited)
1982
as High Priestess / Dying Emperor (voice)
2011
as Telethon Announcer (voice) (uncredited)
1979
as Floyd Pepper / Robin the Frog / Crazy Harry / Lew Zealand / Camilla / Dr. Bunsen Honeydew (assistant) (voice)
1996
as Statler / Blind Pew / Mad Monty / Floyd Pepper / Lew Zealand / Tomato / Pirate / Skulls / Trelawney's Butler / Screaming Cat (voice)
1992
as Tiny Tim Cratchit / Jacob Marley / Ghost of Christmas Present / Lew Zealand / Ma Bear / Mouse / Mr. Applegate / Penguin / Pig Gentleman / Pops / Rat (voice)
1999
as Robin / Statler / Ubergonzo (voice)
1981
as Floyd Pepper / Pops / Lew Zealand / Crazy Harry / Louis Kazager
2002
as Statler (voice)
1984
as Camilla / Lew Zealand / Floyd / Bear / Chicken / Crazy Harry / Dog / Dr. Julias Strangepork / Granny / Penguin / Pops / The Count (voice)
2002
as Robin the Frog / Statler / Announcer / Pops / Floyd Pepper
1985
as Count von Count / Herry Monster / Additional Muppets (voice)
2024
as Self (archive footage)
1990
as Robin the Frog (voice)
1999
as Count / Pestie / Grouch Mayor / Grouch Cop (voice)
1987
as Robin the Frog / Camilla the Chicken / Floyd Pepper / Lew Zealand / Pops / The Count / Gobo Fraggle / Herry Monster
1986
as Balthasar (voice)
1994
as Self (archive footage)
1990
as Robin the Frog / Lew Zealand / Floyd Pepper / Announcer (voice)
1998
as The Count / Two-Headed Monster (1) / Biff (voice)