Sweet!
I purchased this keyboard for use on my university's rather unclean keyboards in our Mac lab, but when not at school, I've decided to use it on my Windows machine as my sexy new keyboard. I've been using the wireless, non-extended keyboard on my MacBook Pro ever since Apple released it, so I am already used to the wonderfulness that is this design.

Typing is a breeze on this thing. It's like butter. I love it. I type faster than I do on regular keyboards with better accuracy. It lays lower than your standard keyboard to the desk, so if you have issues or concerns with carpel tunnel (I don't) be sure to keep this in mind.

If you're a Windows user interested in using this keyboard on your Windows machine, here are some tips for you. The Control key is the last key on the last row, rather than what you're used to which is right next to the space bar. In that location is the Command (aka Apple) key, which will bring up your start menu. Also be advised that the NumLock key for the keypad area is actually the Clear key on this keyboard. Took me a while to figure it out, and I was frustrated when I could figure out why the keypad number keys were acting as arrow keys.

Excellent on a Mac, almost the same functionality on a Windows. Very, very pleased with this purchase.

An excellent corded keyboard
The keyboard is slim and practical and the keys have a crisp and very pleasant feel.

I am very happy with the keyboard.

This is my favorite keyboard ever!
Caveat: I am a many finger hunt-and-peck typist. I resisted touch typing classes and am now so set in my ways. I am pretty fast, but that does have some bearing on this review.

+ The spacing of the keys is exquisite.
+ The placement and size of the modifier and command keys are great.
+ Easy key movement and relative quiet.
+ Fairly rugged - I spilled three ounces of bourbon into the keyboard (don't ask, please). Unplugging it immediately and turning it upside down for a few days on a t-shirt I expected nothing but the worst. Since I started using it again I have had NO ISSUES. I don't recommend this, but it's a great anecdote.
+ The slimness is really pretty cool, it's hard to get your head around, but it feels like the keyboard gets out of the way (even when I'm looking at it to type). A former roommate thought it was a piece out of the computer since it was so thin!

- Occasional missed keys. This _may_ have to do with my typing "style" but I think the keyboard doesn't register very light taps. Testing it right now by pressing a key as lightly as possible, I could get the keyboard to skip every sixth letter or so. (This might also have to do with the bourbon...)
- The two USB ports are slim so not everything can fit in them (they are directly underneath ESC and F19) (That's how thin it is!)
- The two USB ports don't have enough power for all devices (you can't charge an iPod off of one of these - this is most likely due to the keyboard being a chaining device and having no external power supply.
- White keys show dirt quickly. I'm a clean guy and clean my keyboard every month or so, but there are a few keys that always end up with dirty edges.

All the negatives are pretty minor and the positives are AWESOME, so without reservation I recommend this keyboard. I HAVE NOT USED THIS TO PLAY FPS, I don't know how the lag/response is on those. I have used it on other types of games and had no issues.

This keyboard is awesome....
at hanging on my wall. It looks really pretty. But as far as functionality- argh! It drives me nuts! The tactile pressure from the keys feels really nice...except for the fact that a lot of times it didn't register a key strike. Maybe I got a bum one, I don't know. But I, like a handful of other reviewers, spend much of my time backspacing to correct missing letters. I normally clock 80 wpm with 95% accuracy. This keyboard has shot that stat right down the toilet. If it weren't for the missed key strikes (particularly the space bar), I still don't think I would be that much of a fan. While the flatness looks "uber 1337", it puts my wrists in a position that fatigues quickly.

So show your Mac pride and buy one...then put a couple nails in the wall and proudly display it. It hangs right below my calendar in my office. :)

The worst keyboard I have ever used
While the design is sleek and trim looking, it is andexample of form over function. The result is a keyword that is just plain awful. It's like the keyboard from a cheap laptop from a company you never heard of. The Apple keyboard it replaced was much, much better. The product managers at Apple must have decided that it was better to have a cool looking keyboard than one that incorporated basic principles of ergomonic design. And to be honest, the more you look at it the more it just looks like a cheap piece of hardware.

If you look at most well-designed keyboards you will see that each individual key is slightly concave so your fingers settle into the keys. You will also notice the keyboard itself has a gentle curve as the keyboard rises toward the back. Not this one. It is not easy to type on and you end up making more typos. I really hope Apple replaces this with a keyboard that is designed to please the human body not just the human eye.