I'm writing this on my 3 year old laptop w/15 inch 1440x900 screen. When I bought it, I believe the standard screen resolution was 1280x800. For the extra $100 or so, I've been very happy with the extra pixels. Unfortunately, this laptop is falling apart and I've been trying to figure out what to do screen wise on it's replacement.
Thanks to widescreen TV, almost all entry level laptops only come in 1366x768 screens, "HD". I've used other people's laptops, and I'm pretty sure I would miss the vertical pixels. (Why isn't more software optimized for widescreen use yet?)
Without going to a 17 inch laptop, it looks like I'm going to have to pay a huge premium (i.e. at least 50% more) to upgrade to a mid-range laptop from whatever entry level laptop is on sale at a bricks and mortar, or at Dell. Even then, there's not a lot of selection.