"Pirates of the Caribbean: Curse of the Black Pearl": Barbossa shows up at the end of the movie, alive and well, to help Will Turner and his friends rescue Jack Sparrow, who got swallowed by a Kraken.
"The Matrix Revolutions": at the end, Neo kills Smith and delets all the other agents, and the machnies cease the attack on Zion and make a truce with the humans
"Batman Begins": at the end, James Gordon tells Batman that The joker has been running rampant, so Batman has to face him in the next movie. Henri Ducard is revelaed to be the REAL Ra's Al Ghul, and then gets killed when the Gotham Metrpolitan TRain crashes with him in it. Carmine Falcone gets gassed with Scarecrow's fear gas and goes catatonic.
"Superman Returns": at the end, it's revealed that Jason is the son of Superman and Lois, and inherited all of his powers. Lex Luthor gets stranded on a deserted island with Kitty Kowalski, and Superman recovers from his kryptonite poisoning and goes back to fight crime.
"X-Men: The Last Stand": at the end, Wolverine kills Phoenix/Jean Grey with his claws to prevent her from killing any more people. Magneto gets injected with the cure, but we found out that the cure is temporary and he, Rogue and Mystique will recover their powers later on. Rogue hooks up with Iceman after taking the cure, and we find out that Professor X survived and is in Muir Island with Moira MacTaggert.