NEW YORK — John Cusack isn't the first name that should spring to filmmakers' minds when casting a father role. The former fringe member of the '80s Brat Pack has been playing it cool and unconventional for far too long, as the hard-luck con man of "The Grifters,” the frustrated puppeteer of "Being John Malkovich ,” and the romantically challenged music geek of "High Fidelity,” to name but a few of his outsider...