Captain America: The First Avenger (2011)
Chosen by me as I like to go to the cinema a lot and I was in the States so it seemed appropriate.
A fun retro romp. Chris Evans is very good (though the skinny body version is a bit off putting) and is surrounded by some interesting actors (always love seeing Toby Jones). It features a few in jokes for the fans (Jones first appearance is a subtle reference to how is character actually appears in the comic books) and some ties to the Thor movie (though not nessecary viewing at all).
The action, whilst never spectacular is pleasingly old school for the most part, things feel practical rather than cg (until an assault on a train that stands out from the rest).
It ends on a very odd note (discounting the seemingly obligatory end credits sequence - a fun look at next year's team up film The Avengers) that deflates rather than builds excitement as we are forced to consider the implications of one of the characters 70 years on.