Bert & Ernie: Play choo-choo train. Ernie & Rubber Duckie: Play ""Duckie Sez."" Kermit the Frog: Plays the ""Magic Finger Game"" and draws a square. Prarie Dawn: Introduces Childrens art while playing a song. Grover: Sings ""Theres a Monster in My Mirror (Wubba Wubba)"" Bert & Ernie: Play ""Ernie Sez.""