Good system, crappy keyboard on Canadian model.
I picked up an R780 in Canada about a month ago after my wife's Dell Inspiron 1420 suffered a sudden GPU failure and we needed an immediate replacement. With a GT330M GPU and an i5-430 CPU, it was reasonably specced for both everyday computing tasks and even some light gaming. On the plus side, it's a lot quieter than the Dell that it replaced, and the performance is notably better.
There are a number of downsides to it, however. Samsung really should have done something better with the large swath of plastic between the keyboard and the screen. The odd-looking speakers and the power button still leave a large chunk of real estate empty.
Furthermore, the keyboard of the Canadian model is not the same as the one pictured in this review. The Enter key is double-height but narrower, and the pipe/backslash key has been located to the right of the apostrophe key! If that wasn't annoying enough, they also made a duplicate of the *same* key on the left-hand side of the keyboard between the Z and the now half-width shift key. A poor design choice.