Revealing mistake: When the Leprechaun gets sucked into space, he grabs onto the edges of the cargo bay's doors. You can see pieces of his hands disappear into the doors, showing that it's CG.
Leprechaun 4: In Space (1996)
1 mistake - chronological order
Directed by: Brian Trenchard-Smith
Starring: Warwick Davis, Jessica Collins, Brent Jasmer, Guy Siner
Sticks: Man. Twenty-first century and they still can't dance.