Jackass Presents: Bad Grandpa Knocks Gravity Out Of #1 Box Office Spot

There's no Paranormal Activity movie coming to theaters this October, but that doesn't mean we've gotten rid of franchises that just keep coming back when you think they're gone. The latest installment of the Jackass series, Jackass Presents: Bad Grandpa, is the undisputed champion of the weekend box office, bringing in an estimated $12.4 million on Friday, including $1.4 million from midnight screenings. Prepare to shake your heads, cinephiles, because Johnny Knoxville-as-Irving Zisman has knoc...