Caleb over at DSLRVideoShooter.com posts up a short review on a dual LP-E6 battery charger (actually it can charge other batteries too with optional plates). Besides being able to visually tell you the status of your batteries, there's also a USB out to power or charge your USB devices. While a standard Canon LP-E6 charger will already run you about $55 dollars, this dual charger with some nice fancy features will only run you about $80 bucks.
Check out this charger at DSLRVideoShooter.com (click here).
[Update] Thanks to a comment from Rob S., it appears this same battery charger with LP-E6 plates included can be found for almost half price via Amazon + Free shipping for Prime (click here).
Dual Battery Charger for Canon LP-E6 Batteries