I picked this up yesterday for a bargain £12 in its well deserved platinum box...
I didn't get back home til quite late, and I'd also bought the new Tomb Raider (I haven't played that yet), so it was midnight by the time I started playing Uncharted. The lack of installs and load times was most welcome, but it also meant that there was no let up in the gameplay for my mind to kick in and think - "Hey its 5am, maybe you should go to bed now".
The graphics are fucking awesome. Probably my favourite looking game on PS3 so far.
I don't much care for the combat. Its not that its bad, because technically, they work/control very well. I just find I enjoy the exploration/jumping-about and set pieces more than I do the regular gun fights. In fact, everytime I come to an area with small walls in it I think "Ugh. Another gunfight"... the jail breakout and jeep chase was great though, and I've just started the Jetski escape sequence.
All in all, definitely not one to miss if you've still not played this and own a PS3. I mean - holy shit - best £12 I've spent all year!!