Episode 4614 - Enthusiastic Penelope Penguin HBO Premiere: Saturday April 9, 2016 PBS Premiere: Monday December 19, 2016 Chris helps Penelope, an overly excited penguin, learn how to control herself and make new friends. Also featuring "Be a Good Friend" song with Gwen Stefani, Murray Has a Little Lamb-Friendship Day and Elmo's World-Friends. Brought to you by the letter F and the number 2. This street story is originally from Season 45, Episode 4505. If you saw "Enthusiastic Penelope Penguin" please like this post and share your thoughts below.