I am so happy right now. Warner Brothers is producing a fourth installment of the Teenage Mutant Ninja Turtles movies, with a release date set at 3/30/07 (we have to wait that long??). This one’s all digital, and is supposedly “grittier” than the previous three (although it will retain its PG rating). Apple.com has the totally gnarly teaser trailer. Our heroes in a half-shell have returned, carrying on their sturdy backs a risk that people outside of SoCal will start saying “radical” unironically again.