16 down: Largely tense bunch of doctors animated comedy (8)
A tough one if you’ve never heard of the show: largely tense bunch of doctors = largely future ama = Futurama = animated comedy.
My peeve: tense = future. I’ve seen that kind of thing before, for instance black = jet, and not complained, but I reckon that it’s not quite right. Future and jet are merely adjectives that can’t really be substituted for the noun they’re modifying, otherwise we’d have big = house because you often read big house, or light = blue for a similar reason.
I’m pretty sure, though, that this kind of thing is a common feature of cryptics, but, like ellipses, I think I’ll have to grin and bear it while thinking their use questionable.