10. Alien Vs Predator (2004)
How did a movie anticipated since 1989 receive such a luke-warm reception? A toothless PG-13 rating certainly didn't help this misguided if weirdly fun entry.
Director Paul Anderson throws all sense of continuity out the window and commits several cardinal sins to both creature's legacy whilst weirdly attempting to celebrate the franchises. For example, he fills the movie chockfull of cute references to franchise past for fanboy points...but he couldn't care less about an alien bursting out a victim minutes after impregnation.
On the bright side (unlike AVP: Requiem), Anderson can put together a fine action scene with plenty of blockbuster spectacle. Sure, the Predator suits are silly and the wafer-thin characters lacking but once the main action gets going, it comes fast and fun with some stand-out moments (e.g. an ice-bound finale against an Alien Queen). Plus an Unrated version has helped bring the necessary gore factor back for the horror fans.
It's not a great movie nor the one fans deserved yet if you can be flexible, it's enjoyable. Like a dim and mangy dog that's so overjoyed to toss the ball with you; it smells bad but its enthusiasm can win you over.