Netbooks and Windows 7
So Netbooks are the most popular thing at the moment, in the office we have amongst my team the HP, Acer, MSI and my own which is a Samsung NC10 "special edition" (has a longer, supposedly 9.5 hour battery)

sub 3lbs, 10"x 7"x1" they make a great machine for city folks like me that often spend a fair amount of time on public transport with a laptop bag on the shoulder. On those days when all I need is to check mail and perhaps do a ppt presentation it really works well, especially when I don't even need to take the power supply.
My disclaimer on this, I see a lot of people asking about screen resolutions and when is this feature being added, etc. Remember this is a compromise machine, you get a form factor and battery life at a cost, if all you are looking for is a cheap laptop, there are plenty out there, don't buy a netbook.
So bought mine, made myself use it for a few days with XP (ships with at the moment) as a baseline, then swapped over to Windows 7 beta. Really happy with result, sleep/resume, general performance better with 7, really impressed with Samsung here, all devices detected included built in Camera and off of Samsung's site all the control software (camera, function keys, etc) although XP specific work fine with 7.