|Picture||Theme / EKA||Description|
| Biff numbers paintings|
(First: Episode 0707)
| After hanging paintings by Salvador Dada, Biff decides to label them by title, but only finds numbers. Dada tells him which painting each number is for. When Biff gets to the last painting, he guesses it is number five, but Dada tells him it's a terrible title - it's actually "Chicken Soup".
| Looking for a manhole in the snow|
(First: Episode 0837)
|Biff and Sully have been assigned to check if any pipes have frozen near 123 Sesame Street. As Biff reads the instructions, Sully measures the appropriate distance from the stoop and finds the manhole cover. Biff then realizes they won't be able to find the manhole with all the snow everywhere, then takes credit when he spots where Sully has brushed away the snow.|
| The Alphabet|
(First: Episode 0873)
|Biff asks Sully to recite the alphabet.|
| Piano scales|
(First: Episode 0911)
| While moving a piano, Biff reminisces about how when he was a kid he'd practice the piano, when he tries to play a note he has trouble. As Biff leaves to get the truck to put the piano into it, Sully plays a full piano piece.
| Grover invents the wheel|
(First: Episode 0915)
| As cavemen, Grover and Biff struggle to move a heavy rock up a hill. Biff tells Grover they need an invention, so Grover invents the wheel using different shapes - first triangles, then squares, and finally, circles.
| "Sully's Love Song (Yes)"|
(First: Episode 0961)
|Biff and Sully approach Judy Collins, hoping she'll be the third member in their singing group "Yes." She sings the song Sully wrote, a love song full of questions whose answers are always "yes."|
| "One Thing Leads to Another"|
(First: Episode 1051)
|After telling Judy Collins about how he planted a seed and a tree grew, Biff realizes that one thing leads to another, and the two sing about things that lead to other things.|
| The number 2|
(First: Episode 1156)
| Sully appears in parts 2 and 3 of a three-part sketch. In part two, Grover asks Kermit, The Count, and Sully why the number two is their favorite number, only for it to turn out it is none of their favorite number. When Grover asks Sully is the number 2 is his favorite, he shakes his head no. In part three, Sully joins the others in holding up a large number 2.
| "This Is My J"|
(First: Episode 1169)
| Biff sings about the letter J while a J is being hung in a construction site.
| "We Coulda"|
(First: Episode 1782)
|As the two build a doghouse, Biff sings about the various careers they could have taken outside of construction, while the two imagine themselves in those jobs.|
| Sully makes a piano|
(EKA: Episode 2201)
|Biff realizes that he forgot to bring the radio that they listen to music on while they work, so Biff plans to go home and get it, telling Sully not to start until he gets back. However, Biff keeps hearing Sully working, identifying each sound, and then reminds Sully that he told him not to work until he gets back with the radio. Eventually, Biff gives up, but finds that Sully had built a piano to provide music with.|
| "This Song Is for the Birds"|
(First: Episode 2874)
|Biff and Sully and the Hardhats, including Stella, perform a song at Birdland, where Sully plays the piano and Stella taps on Sully's hat.|
|Carrot Time||In a commercial send-up, Biff walks into a dull restaurant that livens up when Grover serves them carrots.|
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