Hmm...I'm not sure that "terrible" is the word I'd use to describe any of these movies, but movies that I like that aren't exactly popular include (off the top of my head):
-Star Wars Prequels (average, but hardly the coming of the Anti-Christ)
-Alien 3 (not as good as the first two, but still decent - doesn't get enough credit IMO)
-The Matrix Reloaded (third film is very average, but the second, while not as good as the first, is still a good film IMO)
-Spider-Man 3 (yes, I like this film - IMO, the Rami trilogy is superior to the reboot films in every possible way, and that includes film 3)
-Man of Steel (definately an "average" film, but I have respect for it - I certainly like it more than most MCU films)
-Starship Troopers (another user has included it - I'm not aware of anyone calling it a bad film, but regardless, it's still an enjoyable film, with good action, and nice humour)
-Predators (not as good as the first, but still better than AvP - nothing spectacular, but decent)
-Jaws 2 (admittedly the only Jaws film I've seen, but while average, not a bad film IMO)
-Last Action Hero (a good film, regardless of what its ratings say. Deal with it!)
-Resident Evil (the very first film, and ONLY the first film - silly, over the top in places, but I'd argue that the first film was still solid overall)
-Star Trek Into Darkness (more of an action movie than a Star Trek movie, but still a damn good action movie IMO)
So, um, yeah. Admittedly most of these entries are me considering films to be average rather than good per se. I'll admit while I'm here that there are films that I dislike more than they have reason to be (e.g. 'Terminator 3'), so there's that too I guess.