Hmm, I have the Ironman 3 Bluray, so I should see if there are extras. I don't think my DVDs had the other ones though. Maybe it's a region thing or it's only on Bluray. I'd only previously seen the "A Funny Thing Happened on the Way to Thor's Hammer" and that was on Youtube. The Captain America bit is really helpful to make the scenes at the start of Avengers make more sense. I wish they'd left that in somewhere.

Thanks!