Chatwin sucks. I remember being super-pissed when it was revealed that he survived at the end of War of the Worlds. That film sucked anyway, but it could have redeemed itself a little by killing him off.
Others...
Van Damme - Guile in Street Fighter (just... painful)
Tyler Hilton as Elvis Presley in Walk the Line (loved the movie, but Hilton didn't look, act or sound like Elvis AT ALL)
Kate Bosworth as Lois Lane
Jennifer Garner as Elektra
Tommy Lee Jones as Two-Face
Hayden Christensen AND Jake Lloyd as Anakin Skywalker
Adam Sandler as an NFL quarterback in The Longest Yard