Dell
Latitudes are great business laptops. 3 year warranty as standard and built for a tougher life than regular laptops (and Apple 'Pro' laptops for that matter). There are various Latitudes for various business wallets and requirements. The D620 is a mainstream, truly portable 14" notebook which has a full-magnesium chassis / shell and steel hinges as well as HDD shock protection.
http://www.dell.com/content/products/productdetails.aspx/latit_d620?c=us&l=en&s=bsd&cs=04
The D820 is its larger brother.
http://www.dell.com/content/products/productdetails.aspx/latit_d820?c=us&l=en&s=bsd&cs=04
HP is also very good. I like the solid build quality, balance between performance and usability and features of the
nc/nx series business laptops. They look... well, businesslike and are nice to work on.
http://h10010.www1.hp.com/wwpc/us/en/sm/WF25a/321957-64295-89315-321838-f1-1839150.html
If your brother is spending at the upper end of the market, I can recommend the
Sony SZ ultralight and the Lenovo
Thinkpad T60p series for more mainstream use. I'm not actually that enamoured of Thinkpads - I think they're overrated - but the T60p is a nice balance of durability, portability, quality and power.
http://shop.lenovo.com/SEUILibrary/...-category-id=19C791A03AF24034A0011B825513BCED
The SZ is a very good combination of portability, power and style.
http://www.sonystyle.com/is-bin/INT...=sstyle-SonyStyleRoot-homefeature-VGNSZ491N/X
I think Eraserhead was referring to a recommendation I made for a friend of his who was after long battery life. It's a pretty good ultraportable machine but due to an agreement between Samsung & Dell, Samsung don't sell notebooks in the US. So you can't buy the Q35 even if you wanted to. But a Hackbook which is just as powerful as the Apple equivalent, goes for at least an hour more on a charge but is a whole pound lighter is... well, intriguing