The idea that Christopher Nolan is beginning to scratch away at a third Batman installment will surely be fuel for the rumor mill for months to come. But there's just enough hesitation to make you wonder if The Dark Knight is the last we'll see until the next reboot.

Nolan's biggest hang-up is that third installments usually ... well, suck. As he told USA Today, "I don't know why they're hard to do. Maybe there's so much expectation to them. But I wouldn't want to do one if it weren't going to be as good as the first or second. That's not respectful to the fans." While he has been scribbling some notes and outlines, he hasn't found anything he's willing to convert from paper to celluloid. "It was obvious when the box office was so big that we had underestimated how ready fans were to reboot the franchise. The worst thing you could do now that you've gotten the plane back in the air is mess up the landing."

That leaves fans to vent their frustrations out on The Dark Knight DVD -- understandably, people wanted more on it (especially of Heath Ledger's Joker) be it rough footage, deleted scenes, or outtakes. But Nolan insists he's never included such leftovers on his DVDs, and wasn't about to start with this one. "For my past three films, I really haven't had scenes that didn't make it in the movie. If it's in the final script, I tend put it on screen ... I don't like outtakes or gag reels. I don't think it's respectful to the actors, who signed on to have their performance on screen, not the takes that didn't work out. It discourages actors from going all-out if they think every mistake is going on the disc."