Love these films generally.
Batman trilogy was brilliant, I know some people felt "rises" was a bit of an anti-climax but only if you were expecting a remake of TDK - TDK was different to 'Begins', and 'Rises' was different to TDK, as a film in its own right and as a conclusion to a trilogy I think 'rises' works really well.
Avengers film generated the most laughter I've heard in a cinema for a long time, and in a good way (THOR v Hulk, Iron Man constantly winding up Banner etc).
Preferred Incredible Hulk to Hulk, just felt that 'Incredible' was closer in tone to, and more faithful to, the original series.
Man Of Steel was great for 90 minutes, but to be honest I did get bored of watching people getting punched through sky-scrapers over and over again (which is always the problem with superman, as L_hC says, how do you generate a sense of drama with a character who's indestructible without the green rock being thrown in, again - in Man Of Steel they struggled towards the end, as every time it looked like he was 'losing' a fight all he had to do was look a bit cross, give a big roar, and suddenly he'd be winning again..).
Think Bryan Singer deserves huge credit for the quality of recent superhero films, without X-Men would we be enjoying any of these films right now? It was Singer's X-Men that showed everyone it was possible to make an intelligent, character-driven film about superheroes.
If anyone wants to see a decent scrap between batman and superman your best bet is to check out the animated version of the original Dark Knight Returns graphic novel - available on BluRay from amazon, and its a very faithful recreation of the book.