I was just reading and interview with Al Pacino, in which he was sort of kicking himself for turning down the role of Han Solo in Star Wars. I've also heard of other instances like this where actors turned down roles they either thought would be silly or ruinous, or just conflicted with their schedules and ended up regretting it when the movies became somewhat iconic. I know Tom Selleck turned down Indiana Jones. John Travolta regretted turning down Forest Gump (that would've been interesting. Imagine Gump talking with a Vinny Barbarino Brooklyn accent?). Johnny Depp (although I doubt, he regretted it) was originally approached to play Ferris Buehler. Anybody else?