On a few occasions, I've needed some large-format (11x17 or larger) color photocopies and finding a place to get one is usually a chore. Chain stores like Staples and Kinko's usually can't accommodate such sizes, or occasionally will give you a hard time about copyright laws -- even when it's clear that you would legally be able to make such a photocopy. For example, Staples told me that it was against the law for them to photocopy my college diploma -- when another school needed a photocopy of it as proof of my graduation.
Sir Speedy always comes through when I need them, though. They are affordable and very quick when it comes to getting my jobs ready. The owner is extremely nice and I really like going there to give him my business whenever I can.