Bit annoying. Just watched The Grey on TV and saw the post credit scene (all 2 seconds of it). Don't know about you but when the credits come up in the cinema I start to leave. Film are usually too long anyway so who wants to sit through 10 mins of credits as well.

I know all the Marvel films have them but how are you supposed to know if there is one ?

http://en.wikipedia.org/wiki/Post-credits_scene

(admittedly a lot of the above films on Wiki are shite.)