'Number Two' Is #1: Knoxville's 'Jackass' Team Defeats The Rock's 'Gang'

'Jackass' and 'Jet Li's Fearless' knock former champ 'Gridiron' to #3.

'Gridiron Gang' Muscles 'The Covenant' Out Of Box Office's Top Spot

Real-life football tale opens at #1; 'The Black Dahlia' debuts at #2.