The Oldest Man: The Hot Dog Vendor
https://www.youtube.com/watch?v=A_set7Do_gg
Even better than the Cheese Shop sketch.
Hilarious!!
You have to watch that Dentist skit twice:
Once with eyes on Tim.
Second time with eyes on Harvey.
In one of the broadcasts Harvey said he was laughing so hard he wet himself.
IIRC, it originally took place in 1969. When Carol started another comedy hour (several years later), Tim and Harvey presented the skit again. There were some minor differences and I liked the 1969 version, but that taping might not have been saved.