Safety First! As of yesterday, I heartily approve of zipping up your laptop bag. Upsidedown, unzipped laptop bags give metal powerbooks the amazing ability to exercise the laws of gravity, fall to the ground, and make a surprisingly sickening "plink!" sound on the pavement. Dents only, no major damage.
Also on this week's approval list: Comparison shopping!
On the travel front, both Kayak.com and SideStep have an interesting interface, although I don't know if they actually save any money over my regular favorite. And SkyScanner is one of the greatest air travel sites of all time, despite the fact that it only has European flights. Check out the the Month-view which lets you see the rates compared to pick out the best day to hop from one place to the next.
Along the same lines is FatLens, a site that lets you find overpriced tickets to events you don't want to see. DVD comparison site BargainFlix is also nice until you notice that the top result is always from one particular site anyway.