"He's so old, he farts dust"
That pretty much summed up everything that's wrong with the show right now - trying too hard at comedy and falling flat on its face. Lay off with the crappy jokes, the sunglasses and the "ageing rocker" stuff, it's getting old already.
(Oh, and please don't break out the check trousers again like last week - Capaldi looked like some dull, monochromatic version of Rupert the Bear)
Clara is now suttering from the same problem the show had with Amy - a character whose story had a "natural" ending (Amy's marriage, Clara jumping into the Doctor's timeline to save him from The Great Intelligence) but the character was kept on well beyond that ending and outstayed their welcome.
At least the trailer for next week's episode shows some promise - Zygons and the return of Osgood - but given how Moffat fluffed what could have been a stand-out classic story with the return of Davros, I'm not holding my breath.