The worst Oscar acceptance speeches

Not everyone can be as smooth as Kevin Spacey. When he picked up his Best Actor award for 'American Beauty' in 2000, he strolled up, shot the audience a look and drawled: 'this is the highlight of my day.' Stars can however take a few precautions against messing things up too much. Here's a handy guide to  those nominated for this year's Oscars on what not to say during their acceptance speeches.