I felt compelled to respond to this since I realized the other day I've seen just about every movie from both companies (except blade trinity, but I'll be watching that in the next few days)
The Punisher (1989) good 80's action movie. too generic for the punisher (especially the lack of skull)
Blade (1998) surprisingly good movie, especially for arguably the first of the comic movies of the past decade
X-Men (2000) solid start. alot of flaws, but still an enjoyable movie
Blade II (2002) havent seen it for a while. i remember it being a solid followup tho
Spider-Man (2002) hated it the first time i saw it, love it more everytime i watch it. currently one of my favorites
Daredevil (2003) decent movie, too many little (important) things were changed from the comic. i still have to see the directors cut
X2: X-Men United (2003) excellent. really not alot you can say, they did just about everything right
Hulk (2003) terrible. one of the most boring movies ive ever seen
The Punisher (2004) good movie, stuff cahnged from the comics, but still an enjoyable movie
Spider-Man 2 (2004) terrible. i hate this movie the more i watch it, and i hate it even more when people say its the best superhero movie ever (which was the consensus up until about a year ago)
Blade: Trinity (2004) havent seen it yet, I'll be watching it in a few days
Elektra (2005) eh. boring. really no point to it. but i love elektra, and jennifer garner haha. so it gets some points there
Fantastic Four (2005) way too campy, Thing and Torch are the only 2 good casting choices. felt like a tv movie overall.
X-Men: The Last Stand (2006) seemed rushed. angel should have become an official xman. beast was cool. i didnt like professor x dying and coming back as some soulless middle aged guy or whatever
Ghost Rider (2007) the directors cut is actually kind of boring. but overall its a decent movie. Ghostrider comics arent Shakespear, so they did a good enough job.
Spider-Man 3 (2007) slightly worse than Spidey 2. mainly because of the Emo/Dance scenes. and you could time Venoms onscreen appearance with a stop watch.
Fantastic Four: Rise of the Silver Surfer (2007) Silver surfer was good, everything else really wasn't. especially the power trading.
Iron Man (2008) Really did everything right. perfect casting, good enough origin story, followed the comics almost perfectly. almost no complaints with it
The Incredible Hulk (2008) much better than the first, and a pretty good/fun movie on its own. loved the references to the original show
Punisher: War Zone (2008) weird. kinda cartoony, but super violent at the same time. I love the punisher, so I liked it, but I just thought it was weird.
X-Men Origins: Wolverine (2009) I'll be seeing this one in the next few days as well.
Batman (1966) good continuation of the show. since thats not on dvd, the movies nice to have around
Superman (1978)sure its dated, but its still a great movie. all the characters are there and done right
Superman II (1980) the love story could go, but Zod and the gang more than made up for that
Swamp Thing (1982) good corny movie
Superman III (1983) eh, pretty boring. shouldve been Braniac
Supergirl (1984) watched part of it a looong time ago. not terrific. my dad only has the 2+ hour directors cut, so I'm still trying to talk myself into watching it
Superman IV: The Quest for Peace (1987) i saw it when i was little and didnt like it. I might be able to appreciate it more now
The Return of Swamp Thing (1989) not great. the opening credits are the best part, so tahts not saying much for the movie
Batman (1989) great movie. joker dying wasnt ideal, but all in all very good.
Batman Returns (1992) I might like it better than the first one. possibly my favorite of the original 4 movies. not a huge penguin fan, but I liked this version of him
Batman Forever (1995) robin was too old, but I liked him. jim carrey was ok as riddler, tommy lee jones wasnt. val kilmer was bland. overall the movies like half good
Steel (1997) saw this about 10 years ago. I just remember it sucking
Batman & Robin (1997) george clooney was a good bruce wayne, and bane looked cool. those are about the only 2 good things in the whole movie
Catwoman (2004) terrible. boring, cliche, completly different from the source material
Constantine (2005) good reimagining. I still think Keanu would have been a perfect Sandman. I'm looking forward to the sequel. oh! the V-Dub guy as Satan was perfect
Batman Begins (2005) Another almost perfect movie. liam neeson was a very good Ra's. and I liked that the movie didnt rely on big name villains
Superman Returns (2006) a basic remake of the first movie. nothin really new. the movies good up until he flies away from saving the plan. after that you can basically quit watching. oh yeah, Superson was terrible. So he erases Lois' memory in the second movie, then leaves Earth for 5(?) years, so Superman's a date rapist and a dead beat dad I guess.
V for Vendetta (2006) One of my favorite comic movies. actually better than the book. the changes actually helped it.
The Dark Knight (2008) very good, but the editing was weird. it seemed like alot of scenes were cut out. kinda of blown out of proportion as 'teh best movie evarrr!!!111', but for making a 'realistic' superhero movie, it works.
The Spirit (2008) weird, quirky, but oddly enjoyable. Sammy L basically makes the movie worth seeing. especially the Nazi scene.
Watchmen (2009) Absolutly loved it, but dissapointed at the same time. It might have been too accurate. there were almost no surprises while watching it. coulda gone without Dr. M's blue.... regions, but still a great movie. it'll definitly be helped by the directors cut