A recent post on 43Folders turned me on to a savvy little MacOSX extension called AutoPairs. It watches as you type, and when you type a paired character, like a curly brace, paren, or less-than sign, it instantly also types its pair and a left arrow key as an assist in keeping your nesting correct. You can configure general behavior for all applications, and override this behavior for specific applications. Nice. This will save me time programming and doing HTML and CSS markup.