The news that Jake Gyllenhaal and Chris Pine will soon be exercising their vocal chords in Rob Marshall's adaptation of "Into the Woods" elicited but one response in me: a whining, "Please don't let this be another  'Everyone Says I Love You' or 'Mamma Mia.'" Ah, how quickly we forget offensive musicals and the actors who would have been wise to stick with their speaking voices. As a reminder to Hollywood and a warning to Jake and Chris, here are 8 terrible singers who nearly ruined the movies they appeared in.