After last night, Aaron Rodgers now leads the league in completion percentage (71.7), yards per attempt (9.6, tied with Tom Brady), touchdowns (14, tied with Tom Brady), passes of 40+ yards (6, tied with Eli Manning and Matt Schaub), and of course, passer rating (122.9).
He is third in the league in completions (129), 7th for attempts (180), 11th for attempts per game (36.0), 3rd for yards (1721), 3rd for yards per game (344.2), 2nd for interceptions (2, tied with Donovan McNabb), 4th for 1st downs (72, tied with Matt Ryan), 5th for 1st down percentage (40), 2nd for longest pass completion (84 yards, tied with Andy Dalton), and 9th for passes of 20+ yards (19).
I don't know how to find the QB rankings for rushes.