Sesame Street: Elmo Says BOO!

Jerry Nelson

The Count

Kevin Clash

Elmo

Martin P. Robinson

Telly

David Rudman

Baby Bear / Davey Monkey

Joey Mazzarino

Joey Monkey / Darknut

Carmen Osbahr

Rosita

Peter Linz

Additional Muppets (voice)

Frank Oz

Bert (voice)

Richard Hunt

Kermit the Forg / Frazzletone (archive footage)

Jim Henson

Ernie / Harvey Monster (voice) (archive footage)

Julia Roberts

Self

Lillias White

Self

Joseph Brancale

Cecilia Gonzalez

Eileen Gonzales

Melissa Remo

Nicholas Sullivan

Christopher Cerf

Chrissy (voice) (uncredited)