Cass Elliot in 'Pufnstuf' movie

I totally missed the whole H.R. Pufnstuf phenomenon, so when I see clips like this, my brain literally quivers trying to comprehend what the flying fuck these people were thinking. In this clip from the film Pufnstuf from 1970, Cass Elliot treats us to a delightful tune about the joys of being different - but whose freakish idea was it to include a lovable Hitler mouse character in this number?

Via MilkandCookies.