The PlugBug is a pretty cool charger design. I have my MacBook Pro which I take with me when I travel. This little contraption will allow you to plug your laptop charger into it. You have a USB port to charge your iPad / iPhone / etc and still be able to charge your laptop. Saves having a second outlet in use when in the hotel or classroom. I can see a use, but I'm not sure I can justify the expense.
Ramblings of an Amateur Photographer