I remember loving "Get Smart" as a kid when it was on the network and in daytime reruns. I didn't see it again for 20-some years until Nick at Nite ran it in the 90's, and by then I wondered what I ever saw in it. I'm a sucker for old sitcoms, too, but IMO that one just didn't age well over the years.
It was definitely unique, though. And Don Adams created a persona, voice and delivery that was a staple for impressionists for over a decade after the show ran. Imitation is the sincerest form of flattery.