It's now officially a rock-'em, sock-'em summer! Paramount's Transformers 2: Revenge Of The Fallen shattered the Wednesday opening record set by Harry Potter And The Order Of The Phoenix (#5) in 2007: $60.6M vs $44.2M. Even better for the studio, Transformers 2 came in 2nd only to 2008 box office phenomenon The Dark Knight for biggest opening day ever: $60.6M vs $67.1M.