I've been using an Asus EEE 1000 with the 40GB SSD (8GB primary, 32GB secondary) for about a year and have been happy with it. Using it for email and internet primarily...haven't done much with video, as it doesn't have any drives. I ran Windows 7 beta and RC on it for quite a while with no issues. Now, with the pending expiration of the RC license, I've moved it back to Ubuntu, Netbook remix. Works great for what I use it for. OpenOffice is able to take care of opening any attachments. Due to the small keyboard and display, I don't use it for content creation...only reading, minor editing, and replies.
I still carry my monstor Sony laptop with the 17 inch WVGA for when I need to work, but the 6-hour battery life on the Asus is great for the airplane, Starbucks, etc.