Crank 2: High Voltage
This movie is wonderfully insane. The insanity is total. At one point there is a Godzilla style battle.
Sometimes the racism and Ichi The Killer-osity teeters on the edge of too much, but at those times just cringe a little, laugh a little, and relax a whole lot.
Also, stay through the credits. There’s some great outtakes.