I saw someone submitting lord Bragg of Bragg on here a while back.
Actually, I quite like him.
Consider 'In Our Time', a flagship mostly-arts-and-history program.
He hosts this very well, in that he invites expert guests, has arranged what questions need to be asked to allow the guests to reveal their knowledge and basically lets them do the talking. He even gamely takes on some science topics, in which he is clearly out of his depth, but that doesn't matter, because he lets the expert guests do the talking.
Contrast this to 'Material World', a supposed flagship science program, hosted by the insufferable Quentin Cooper. He just can't Shut The Fuck Up. He constantly rabbits on with a stream of pun-based drivel, asking his guests questions and not STFU for long enough to let them answer. When they do answer, he constantly interrupts with 'humerous' puns etc, and the sniggers to himself on-mic at his own 'cleverness' like beavis and butthead hearing the word 'boobie', over the top of the guest who tries to continue through gritted teeth.
So:
Quentin Cooper: Super-Twat.
I commend this to the house.
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R