- Frank Oz (Bert)
- Sonia Manzano (Maria Figueroa Rodriguez)
- Roscoe Orman (Gordon Robinson)
- Martin P. Robinson (Telly Monster/Aloysius Snuffleupagus/Irvine/Slimey (voice))
- Suki Lopez (Nina)
- Violet Tinnirello (Charlie)
- Jennifer Barnhart (Zoe (voice))
- Ryan Dillon (Elmo (voice))
- Alan Muraoka (Alan)
Sesame Street — S16E29
Episode: Telly and Oscar's secret knock.
Air Date: 1984-12-27
Overview
Telly and Oscar create a secret knock as their special signal to keep unwanted visitors away. The private code becomes a source of pride and strengthens their unlikely friendship. Sponsors: N, W, 12