Ah.. good point. The store that Bitt linked to, Dick Blick is located only a few minutes from my house. I've been there quite a bit. They not only sell the matte cutter (which I didn't know even existed!), but they also do custom matting. Depending on the price, it might be worth picking one up!
Thanks guys!
PS - You'd be surprised how many modern CDs are released on LP. If any of your a big fans of a particular band, it might be worth looking into getting one framed. You can even pick up good bands like The Clash on record for some cool wall art. My NIN might get done after the Pink Floyd.