Do you mean how close are they to the comics? If so, the answer is "some more than others."

The Christopher Reeve Superman was faithful to the tone, if not the exact elements of the Silver and bronze Age comics. krypton is a bit different and Luthor, though still a criminal mastermind, is not quite the maniacal Luthor of the comics of the period. The Burton Batman draws plot elements from the Engelhart/Rogers run, then mixes in bits of Dark Knight and year One; but, strays heavily in the execution. It keeps the important stuff the same; but, it is not quite your father's Batman. Christopher Nolan is more faithful to Year One, to an extent, and other stories about the young Bruce Wayne developing his skills; but, makes a fair amount of changes. It matches the tone of the comics of the 80s and 90s.

The Raimi Spider-Man captures classic Spider-Man pretty well, with some minor alterations to the Green Goblin (mostly cosmetic). It captures a large part of the classic elements well, as does the second film. The third goes for Venom; but, falls into a mess, caused by rushed production. Haven't seen the later films.

Iron Man polishes up the Iron Man origin and mixes in the Obadiah Stane storyline, while reworking both for a modern audience. Stark is a bit more hyper and pretty much a jackass; but, it works and captures enough of the elements of the comics. The sequels are pretty mixed for me. None of the films really captures what I liked about Iron man, especially from the Justin Hammer storyline.

Incredible Hulk feels more in line with the tv series, with some of the comics thrown in. I wasn't a fan of the whole Ultraverse-influenced tie in to the Super Soldier Project; but, I guess it was more palatable than a whole bunch of nuclear tests.

Thor captures some of the series and is at its best with the Asgard stuff. The Earth scenes are fun, but some of them struck me as a rehash of Superman 2. Haven't seen the second film.

Captain America captures the basic elements of the origin well and certainly the character of Steve Rogers. Peggy carter is given a nice updating that really works and the Red Skull is a decent attempt at the villain, without going too far over the top. The third act is way too rushed, for my tastes. Winter Soldier captures that storyline well, while mixing in the old standby of evil SHIELD conspiracies; This time, related to HYDRA. Kind of Winter Soldier crossed with Nick Fury Vs SHIELD. Civil War doesn't work, for me; too contrived. Don't think much of the comics, either.

Avengers captures the comics penchant for throwing lots of characters into big fights, with little character development for a lot of the cast. It's a big spectacle, but there isn't much emotional depth. A lot of Avengers stories had that; but, it misses a lot of the stuff that better writers put in the Avengers. Haven't watched Age of Ultron, yet.

Ant-Man grafts a nice caper film on top of the Stephen Lang story, from Marvel Premiere. Guardians does a similar thing with the Abnett Guardians. Since they are more loosely tied to continuity, they get to be more of their own thing.

The modern stuff pulls bits and pieces from things; but, mostly those that fit the viewpoint of the people at the helm. As such, they feel somewhat disjointed to me. They are more like a series of easter eggs, rather than a full story. It's part of why they feel forgettable after you watch them (or after I do). They are entertaining during the film; but don't exactly feed your brain.

Nolan is the only recent-era filmmaker I thought had something to say in his movies, though I think he wasn't as successful in saying it as others do. I find the 9/11 metaphors not to be that solid, and Dark Knight Rises really bludgeons the whole 1% thing.

Wonder Woman I haven't seen. It seems to suggest the more current take on her; but, I'm not so sure about classic elements. The first season of the tv series did that quite well. Not the second season, in the modern world. Anything that truly captured the Golden Age Wonder Woman would have all kinds of groups up in arms. It was a pretty weird, though entertaining, comic.

Hellboy and the Rocketeer are the films that I thought truly translated the material to screen, while taking advantage of what film does well. Ghost World and American Splendor did the same with their sources. The Crow captured the darkness and anger, while the audience provided the grief.

I still think the modern films haven't captured the source material as well as the old republic serials The Adv. of Captain Marvel and Spy Smasher, as well as the Columbia Phantom serial. The Green Hornet ones are pretty good, too.

I've been told that the most faithful adaptation of a comic book story on film is Spawn.

I haven't read the comic or seen the movie, so I can't comment.

In many ways, yes. The only thing I thought they got wrong was the delivery of the dialogue, which was usually a little too fast for me. This is just a personal feeling, of course - I have no idea if anyone else found the same. The snappy delivery was actually in keeping with what you would see and hear in a lot of the miovies of the era (40s-50s) that the comic and the film were in some ways trying to emulate so I can see why they took that route. But for me it ruined the effect of lines like Marv's "Worth, dying for. Worth killing for. etc" which came across very powerfully in my reading of Miller's comic but not so much in the movie.

What does everyone think of the Spirit movie? I haven't seen it but for me the main appeal of the Spirit is Eisner's artwork and I find it hard to imagine them translating that to the screen the way they did Miller's Sin City. I have no idea if they even tried, mind you, not having seen the film.

The Doctor Strange and Thor films in themselves were entertaining but they were also the most disappointing personally just because they didn't really capture much at all of what was so great about the best of the comics. I think the Raimi Spider-Man, Captain America, Iron Man, even the Avengers, all did a better job of that - if not consistently, at least from time to time.

I'll probably feel the same about the Black Panther, since that's another character that's a particular favourite of mine.