A new poll puts Snooki and Charlie Sheen at the head of a list of nightmare celebrity Valentines's Day dates.  According to MetroSource, nearly a third of men would rather be by their lonesome February 14th than go out with Snooki.  Charlie Sheen garners a similar response from around a third of women.  Who ranks highest among men?  Jennifer Aniston.  Chicks prefer George Clooney.