You'll have to forgive me if some of these have been mentioned. I tried grunching through most of the thread.
Hero diffuses bomb with 1 - 2 secs to spare. Why not 30 - 60 mins?
Also, any half-decent bombmaker should know by now to have a detonator that goes off at say 00.37 or something random.
Guy finds bomb say under-the-bed, under-the-car, in a bag-pack and subsequently the bomb detonates at that moment.
Guy throws his weapon down for a fair fist fight.
Prophecy of a child who shall be the downfall of the evil ruler. (hasn't been used in a while, saw it in Kung fu Panda 2 recently)
. Also, trusting someone else to finish off the prophesied bringer of you doom.
Bosses who employ advisors who are either completely inept or very sharp but the Boss disregards every piece of advise offered.
Baddie kidnaps damsel and plans a wedding to take place in a week's time. Giving the hero enough time to find her.
Meanwhile, a nice quiet civil ceremony could have been arranged within 2 hrs.
Self-destruct sequences that can be initiated by button or command named 'Self-Destruct'
Undercover baddies who have tattoos, identifying markers and dress codes unique to their organization. (Think, Hitman)
"Look, before you kill me, will you at least tell me what this is all about?" or "But before I kill you, there's just one thing I want to know."
Giving the hero a last request.
Originally Posted by The Brickie
Also on the computer theme...
No-one ever uses a mouse.
Not a movie or even a cliche, just annoying.
Hellmuth pretending to play online by typing a gazillion words per min in that UB ad.