BusinessWeek questioned the battery life of the new phone, which will pull double duty as a battery-slurping iPod.

NPR: The iSsential Guide to the iPhone

Schaefer believes big budgets and smaller ensembles have placed an increasingly heavy burden on actors who now pull double duty as singers and dancers.

FORBES: Bright Lights, Big Fitness: The Business Of Keeping Broadway In Shape

Not only must you settle on a screen size, you also have touch-enabled machines to consider -- and don't forget those Atom-powered hybrids, which pull double duty as standalone slates and full-fledged laptops.

ENGADGET: 's holiday gift guide 2012: ultraportables

We think the design is sorta fresh just on its own, but what Sony really hopes will impress us about the Cyber-shot DSC-M1, their new 5.1 megapixel digital camera, is that it can also pull double duty as a mini-camcorder.

ENGADGET: Sony's DSC-M1 digital camera

While we've already learned that television shows pull double duty as entertainment and a sedative, and that launching a console with a widely understood shortage hitting stores can cause all sorts of madness and criminal activity to break loose, the last thing we needed was one more " study" claiming that video games breed rage.

ENGADGET: More "proof" that violent video games breed rage