Devil - my buddy and I watched this last night for movie night. It was really bad, like, hilariously bad. He figured out the entire plot the first fifteen minutes in so we only stuck with it to see if he was right or not. and of course the ending was painfully weak, as it always is with m. night films.
Black Swan - I really hated it. I think it was sorta like scott pilgrim and I was just expecting too much going in. I only saw it as a huge waste of potential.
Hang over/super bad - agreeing with you guys, both were lame -- they all are these days though
I think the worst movie i've ever seen though has got to be Wanted. It was like they just threw in a bunch of cliched elements from ever other hollywood film and gave up. Morgan Freeman as the narrator, some ancient asian legacy, some secret messages that are hidden in cloth for the secret underground society that is saving the world and the typical father/son dynamic and then angelina jolie in leather... I can still complain about it and it's been years!