Scooby-Doo, Where Are You! (1969 - 1970)

An artist rendition of Hayley and Jeff shows them as Velma and Shaggy from Scooby Doo.

Abed asks about the effects of marijuanna, because he thought it just made people custom paint vans and want to solve mysteries - an obvious reference to the Mystery Van and the Scooby-Doo crew.

At the Oceanside Retirement community, each chair in the theater is equipped with a pause button, allowing the audience to stop any movie when they have a question. A Scooby-Doo reference is made when someone says, "Old man Withers owns the amusement park. Let's see who's really under there!" as the face of Old Man Withers is ripped off, revealing his skeleton, proving that he was not in fact wearing a mask (as is what generally took place at the end of the Scooby-Doo episodes.).

Liz exclaims, "Scooby-Doo!" when Thad tells her he created a plan to sell Xaro to Kabletown in an effort to run in to her again.

When Rallo and Cleveland are dropped off at the haunted house, Cleveland remarks that it's a 'Scooby-Doo' kind of atmosphere, adding a "Zoinks!" for good measure.

When the waitress sets Rallo's plate in front of him, a Pastrami piled sky-high on rye bread, Rallo remarks, "What am I, [expletive] Scooby-Doo?!".

After the creepy guy buys the van, he sys all he needs now are some mystery solving friends and a talking dog.

For Halloween, Lisa dresses as "Velma", Tessa is "Daphne" and both Malik and Ryan are dressed as "Fred".

Cleveland, the office funny man, attempts to do 10 impressions in 30 seconds. One of his impressions is of 'Scooby-Doo'.

Several of the characters from Scooby-Doo are featured in this ad including Fred, Velma, Daphne, Shaggy, Scooby, The Mystery Machine van, and several villains from the cartoon.

The animated clip of Scooby and Shaggy running is from this 1970's cartoon.