I gotta admit I dig Zooey Deschanel too. Even though the Hitchhiker's movie sucked, she was perfect casting for Trillian.
Here's some movies I might have watched if she'd been in them. BTW, the Manic Pixie Dream Girl is "that bubbly, shallow cinematic creature that exists solely in the fevered imaginations of sensitive writer-directors to teach broodingly soulful young men to embrace life and its infinite mysteries and adventures."
Yep, that's her.