Who's the worst screen couple ever?

Valentine's Day, so says Joel in Eternal Sunshine Of The Spotless Mind , is "a holiday invented by greeting card companies to make people feel like crap."

So on February 14th, totalfilm.com is kicking against the syrupy tide of fluffy pink teddy bears and sickly kissy-wissy Facebook lovenotes by naming the Top 20 Worst Screen Couples.