If I can add a "me too"...
Back when Halley's comet was last paying us a visit, I was a TV cameraman at the BBC in Manchester, and part of my job was working on a Saturday morning kids' show presented by an affable presenter, Mark Curry.
As a fan of all things astronomical, I was delighted that Sir Patrick would be dropping by to answer some questions in a spot (invariably) constrained by time.
A few minutes before we went live he came into the studio - looking as dishevelled as ever - and Mark said that he had ten questions ready, and that they'd got fifteen minutes before the next cartoon was due to run. Looking over the questions, Sir P. said, "You don't need to ask me those - just ask me this..." and he went on to say, if I remember rightly, something like "Patrick, Halley's comet is in the skies - could you tell us about it please?"
Cue the interview: Mark asked the suggested "question", and - as anyone who's seen Patrick will guess - he began to talk enthusiastically, knowledgably,
inspirationally and (of course) speedily, for the next fifteen minutes. Since the show was clearly in a safe pair of hands, feedback from the gallery went unusually quiet while all listened in. As the fifteen minutes were coming up - Sir P. at full flow and having not been interrupted once - the silence in my headphones was broken with the director's comment: "Drop the cartoon".
Andy