Season 20

01 Episode 570 Episode 121st November 1988 02 Episode 578 Episode 91st December 1988 Gordon has a headache. 03 Episode 579 Episode 102nd December 1988 Luis and his old chair. 04 Episode 580 Episode 115th December 1988 Grammy Award winner Bobby McFerrin sings ABCs with Hoots the Owl. The Two-Headed Monster learns to blow bubbles. Maria and Luis try to reminisce about their wedding. Betty Lou sings the "Amigo" song. "Sesame Street News" correspondent Kermit the Frog reports on London Fog. Ernie and Bert leaky faucet skit. Cookie Monster sings about subtraction. Placido Flamingo performs a "Lost Toy Opera" with Big Bird. 05 Episode 583 Episode 148th December 1988 Telly’s birthday party. 06 Episode 584 Episode 159th December 1988 Maria and the Fat Blue man. 07 Episode 587 Episode 1819th December 1988 An early Elmo meets Bob's deaf friend and learns to say "hello" in sign language. A classic skit of Phil Harmonic and Placido Flamingo live from the Nestropolitan Opera. A vintage animation of Gerald's dog, Sparky, re-imagined as an alligator. The Honkers play "Mary Had a Little Lamb" on their noses. 08 Episode 589 Episode 203rd January 1989 Legendary chanteuse Lena Horne and Grover perform a duet about not being shy. "Monsterpiece Theater" presents "Alibaba and the 40 Thieves". The classic "Plants Need Water" and the "Invention of the Raisin" animations. Placido Flamingo stages a Sesame Street Opera. Kermit the Frog reports on the Three Little Pigs live for "Sesame Street News". Soap opera spoofs of "All My Children" and "Another School". 09 Episode 594 Episode 251st March 1989 10 Episode 599 Episode 3023rd March 1989 11 Eipsode 2598 Episode 4726th April 1989 Loud talker Guy Smiley goes on safari and scares off the animals. A classic skit staring Ernie as "Old King Cole". The Two-Headed Monster sings a lullaby to itself. Snuffy writes a love letter to his grandmother. Mumford's magic trick accidentally shrinks David. Ernie hosts an arboreal fashion show. 12 Episode 2614 Episode 12918th May 1989 Maria goes into labor. 13 Episode 2615 - Birth of Gabriela Episode 13019th May 1989