When I got my first iPad, I got a keyboard dock with it, thinking I would often want to type on it in meetings, or something. I quickly discovered two things that made it mostly sit around collecting dust, though: a) the on-screen keyboard on the iPad is great, even more so than on the iPhone, and b) you couldn't dock the iPad if you had its cover on. Yeesh.
As a result, it wasn't until I got the iPad 2, about a year later, with its easily removed (or even just folded away) "Smart Cover," that I discovered Apple had sent me the wrong keyboard dock! It took me just a couple of minutes of playing with it, and scratching my head over the odd key layout, to realize that they'd sent me the Japanese version of the dock. Yes, it had Roman characters, but also lots of Japanese markings.
I didn't find it all that useful, and still didn't need it much, but I realized my manager's Japanese wife might have fun playing with it, so I asked him if he wanted to bring it home for her to try. He did, and I forgot all about it, until the other day, when he walked into my office and said "I've had this way too long," handing me a keyboard dock. But... it wasn't mine! It was a U.S. version! I told him it wasn't the one I'd lent him, and he smiled and said "Would you really rather have that one?" Heh. No. Sneaky.
So, for the last few days I've been playing around with using the iPad on the keyboard dock at work. It helps that I've done a fair amount of desk cleaning, but it's still a bit cramped with the laptop and its keyboard, the desktop machine and its keyboard, and the iPad with its (luckily, tiny) dock. It takes a little getting used to; the iPad doesn't correct anything for you when you're typing on a real keyboard! I can't type "ipad" and have it automatically changed to "iPad," as happens instantly on the on-screen keyboard. Or, "cant," which automatically grows an apostrophe on the iPhone or iPad otherwise. I'm sure I'm faster, though.