I love NBC's "The Office." I especially love Dwight K. Schrute. If you're familiar with the opening credits, then you may recall the repeating scene of Dwight destroying a credit card using his paper shredder. In this case, the act was used for dramatic effect, but it's true that this tactic works--given that your shredder is "man enough." But what other options are there? With credit and identity theft on the rise, it's imperative that consumers know some simple but effective techniques for destroying cards that have been closed or replaced. And if you've ever tried to destroy a credit card with your bare hands, you know it can be difficult. So here are the two best ways to make sure your old cards never fall into the hands of credit thieves.