He gave life to Big Bird and Oscar the Grouch on "Sesame Street." Through them, he taught so many kids about letters and numbers ... And he began to learn the alphabet - because when we started ...

As Conan O’Brien prepares to kick off the 97th Academy ... he captioned a photo of himself with Sesame Street‘s Oscar the Grouch during a recent Jimmy Kimmel Live sketch.

Oscar the Grouch turns 48-years-old on Thursday. The "Sesame Street" character first appeared on the children's series on Nov. 10, 1969. Oscar's fur was orange during the first season of "Sesame ...