Can word-of-mouth make Hot Tub Time Machine a box-office hit?

Have you seen the ads for the upcoming MGM flick, Hot Tub Time Machine ? It’s about four guys who get drunk in a hot tub one night and wake up in 1986. Perhaps you’ve even seen the movie. “The studio [MGM] decided to host hundreds of free screenings across the country to spread word of mouth,” reports The Wall Street Journal . Through this word-of-mouth marketing — and other efforts — the studio hopes Hot Tube will be as successful as last year’s The Hangove…