Here's a cool little thing I just discovered. Maybe you all know about it already, but I did not. As an old-time computer user, I have been trained to hit one key at a time, or at most one key in addition to a modifier key. Well, it turns out that it is no problem on the modern Mac to type several keys at once.
I found this out while wanting to bold and underline a word in TextEdit. I held down the Command key, and then simultaneously hit the B and the U keys. Sure enough, bold AND underline. I checked and it works in Mail -- and even in Word! Of course I had to push the limits. Bold, Underline, Italic? No problem. Try that on Windows!
Mac OS X Hints
http://hints.macworld.com/article.php?story=20060525184808386