For me, I liked watching Jon Pertwee when he did what he did best-comedy!
As a kid I loved him as Worzel Gummidge, I've caught the odd episode over the years since and still think he's funny in that! I remember for many years I never knew what Jon Pertwee actually looked like!
I also liked his appearances in The Carry On Films, he really made such two smalls
seem such a big role in both of the films he did.
In Doctor Who, just a shame that aside from a few scenes in The Green Death, he didn't bring more of that to the role, but perhaps if he had, we wouldn't have got Tom Baker, so guess there's an upside to his serious interpretation.