Caroll Spinney
Big Bird / Oscar the Grouch (voice)
Pam Arciero
Grundgetta (voice)
Carmen Osbahr
Rosita (voice)
Saman Rouhani
Grouchketeer
Megan Willis
Grouchketeer
Carisse Elizabeth Moy
Grouchketeer
Jamari Richardson
Grouchketeer
Richard Hunt
Two-Headed Monster (voice)
Jerry Nelson
Two Heated Monster / "In My Book" Singer (voice)
Fran Brill
Zoe (voice)
David Rudman
Top Ten Quiet Time Ideas Announcer (voice)
Martin P. Robinson
Telly Monster (voice)
Joey Mazzarino
The Wise Man (voice)
Ruth Buzzi
Suzie Kabloozie (voice)
Daphne Rubin-Vega
Self
Steve Whitmire
Ernie (voice)
Frank Oz
Bert ("Naptime") (voice)
Jim Henson
Ernie ("Naptime") / Kermit the Frog (voice) (archive footage)
Daphne Rubin-Vega
Herself