Jason
X (2002)
It's silly, it screams B-movie, the sets are horrible, the plot is silly, the actors are terrible, the dialogue is about as corny as it gets, and the upgraded futuristic Jason is really, really, really bad but, man... a bad movie is rarely this much fun.
Julie
& Julia (2009)
The writers did a great disservice when they saddled Julia with Julie because, unfortunately, even someone with a bodily frame as large as Julia Child's couldn't carry this much dead weight.