John Cleese is the by far the funniest Python.
His credentials are too numerous to mention, but I especially enjoy A Fish called Wanda, Fierce Creatures, and the Life of Brian..
"All right, but apart from the sanitation, the medicine, education,
wine, public order, irrigation, roads, a fresh water system, and public health, what have the Romans ever done for us?"
Reg is a genius.
From the series, I like the Old Lady Gangs.