Drag and drop installation

I'm not sure how it came about, but it turns out that I was running Firefox several versions out of date. (Actually, I think Google told me. Thanks Google.) So I went to the Firefox download page and grabbed Firefox 1.5. Of course, it came as a disk image file—nothing new now that I'm a Mac fanboy. But, for some reason, I had a flashback to the last time I installed Firefox on Windows XP. Don't get me wrong, it's a nice installer, but it's nothing like this:

That's right, Windows schmucks, to install an application, you take the icon on the left and drag it into your Applications folder. And that's it.

OS X | Firefox