I went to Best Buy yesterday and bought a new Apple Wireless Keyboard. It is by far the best keyboard I have ever experienced; everything about its simple design stands out from a mile. Nothing is present you don't need. No overcrowding function buttons on the side, no obtrusive, clunky keys - just the bare essentials. It's also a thinner than a #2 pencil.
The obvious difference from other mainstream keyboards is the lack of a number pad on the right-hand side. At first, I thought that I would miss the pad because I used to use it quite often. However, as I got accustomed to the Apple keyboard, I really didn't find myself missing it at all. The row of numbers at the top is much more convenient, unless you're doing a lot of calculations (accounting, etc.). As a matter of fact, I now feel overcrowded when using a standard keyboard with the pad.
Size also plays a major role in this piece of hardware. At my desk, I don't have a lot of space to deal with, so every square inch counts. My previous keyboard, a Microsoft Wireless Desktop 4000, literally took up the whole desk. With this new keyboard, I'm able to take advantage of all the space I could never enjoy before. For even more space, the keyboard conveniently fits right on the base of my monitor. So if I ever need to do any work that's not on the computer (like that's ever going to happen), I have a whole desk to work on.
Portability is another factor that I really like about the Apple keyboard. I have my computer connected to my HDTV for the purpose of surfing the net across the room, watching movies, and the like. This keyboard is SO easy just to pick up and take over to the other side of the room. Think Logitech DiNovo Mini - but it still retains functionality as a standard use keyboard.
Also, keep in mind - you don't have to own a Mac to take advantage of this hardware. As long as your Windows PC is Bluetooth-enabled, you can pair it with an Apple Wireless Keyboard. The Windows key is mapped to "Command", and the Alt key is mapped to "Option". I'm not sure about Linux, though. It might work....
This keyboard has revolutionized the way I work, and I just can't picture myself going back to a standard keyboard. You can order one for yourself at www.apple.com/store for $80.