The most incredible Instagram photos we've ever seen

Instagram, the iPhone app that manipulates mobile photos in a matter of seconds, makes ordinary folks into photographers and photographers into superheroes. Really.

All a user has to do is snap a photo, select a "look and feel" and voila! Instagram automatically edits the picture -- no Photoshop necessary.

The photo-sharing app recently hit 5 million users and nearly 100 million uploaded photos. Here are 50 of our favorite shots...