21. Tea Leoni's Hilarious Overacting (Jurassic Park III)
Now, nobody's saying that you wouldn't freak the eff out if you saw your boyfriend's skeletal corpse strung up in a tree, but it's tough to take Amanda's reaction one bit seriously when Leoni hams it up for the cheap seats. When the remains fly in her face, she screams like her life literally depends on it, and appears to somehow tangle herself up in her ex-partner's parachute. Hell, even after she's clear of all the death, she jitters and runs around like a mouse on cocaine. Granted, this just might be a case of Leoni realising she's in a terrible movie and having some fun with it, but even so, it's straight out of the Al Pacino School of Scenery Chewing. Terrific or awful, depending on your definition.