I've been looking for a laptop bag that I can use when I'm traveling. I have two Tenba camera bags that I use and it's big enough for 13 inch laptops ( which I have ). It should also carry my Canon 60D and the 18-200 mm lens. The problem that I have with the Tenba bag - is that it can really be tight inside the bag and I don't have space for a notebook and the power cord for the laptop.
So I hunted for a new bag - and I found this Laptop bag from Crumpler. It can fit 17 inch laptops. It has a lot of space. I've been using it as my office bag and I end up having so much space because I don't typically bring my camera when I go to the office.
This is the Skivvy model. They also have the 13 inch and the 15 inch sizes - which are still great bags if you need less space than I do.