Updated December 15th, 2015.
Ever use the “Help” menu in 10.3 or 10.4. or 10.5? If you have, you know it’s the slowest thing ever. But, in 10.6 (Snow Leopard), it’s fast. Really fast. So, now, it’s useful. If you’d previously given up on getting help from the Help menu, and you’re now on 10.6, give it another try. You’ll like it.