This is just a cool thing I ran across a few years ago when I was working on developing my website, and I wanted to use the actual icons of applications for which I was writing tutorials....for example, earlier today I wrote about Apple's Mail application. Look at the pretty logo!
- Open your Applications folder and select the app with a single click
- Hit ⌘C to copy
- Open the Preview application
- Go to File > New from clipboard
What will open is the application's logo in multiple sizes for you to use as you see fit. Here's the Mail.app as it appears in Preview:
I simply saved the icon as a PNG file (or you could choose JPG or GIF), and I now have a graphic I can use in documents, on websites, or in presentation software. Very handy!! I have saved a whole collection of these in an iPhoto album to use in lessons.