Our emotional reactions to color guide our shopping decisions, says Eiseman.

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Dubbed "THX tune-up, " the app slings videos, photos and test patterns to televisions and projectors to guide users through gauging and adjusting their kit's aspect ratio, brightness, color, contrast and tint.

ENGADGET

At a time when the lines between government and business are blurring and most pundits are quick to color them over with the promise of technology, Khanna has given us an important guide that will help us run the world into the future.

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Live Guide, a graphic user interface that provides simple assistance to control settings to capture the perfect image, adjusts color and tone at the swipe of a finger.

ENGADGET: Olympus SH-50 iHS touts 5-axis video stabilization in a compact, $300 camera (update: hands-on pics)