... he only appears in a 3-5 minute post credits cameo in IM1...
It's about 25-30 seconds
, easily clocked on your DVD's counter.
: [arriving home
] Evening, JARVIS!
: [voice distorted
] Welcome home, sir...
[Stark stops as he sees a figure in his living room
: "I am Iron Man". You think you're the only superhero in the world? Mr. Stark, you've become part of a bigger universe. You just don't know it yet.
: Who the hell are you?
: Nick Fury. Director of SHIELD.
: I'm here to talk to you about the Avenger Initiative.