Guilty. Especially when the question is preschooler standard and they time out. My usual line is, "How could you NOT know that?!!" Luckily, at that time of day I am usually alone. As Jennifer says - it is annoying for others who may be watching.
Yep, all the time. And shout 'abuse' at the contestants when they say something utterly stupid! I sometimes wonder why they even bothered to go on the show when they obviously have NFI about almost everything!
Yes I do quietly call out the answers. I only watch
Who Wants To be A Millionaire? I used to watch, Perfect Match (?) then I'd only watch the last 5 minutes of it, but then I couldn't be bothered watching any of it at all & I've always hated The Chaser & most of the other quiz shows, but maybe that was because I couldn't understand them!