YouTube user Mark Rober, last seen making a gruesome Halloween costume with a couple of iPad 2s, has posted another video on YouTube featuring another relatively unconventional use for Apple's mobile devices. Rober found that during a trip to the zoo, he could use the iPhone's front camera and screen to both get the apes' attention and film them at the same time

The San Diego Zoo is arguably among the very best zoos in the world. With more than 4,000 animals and 800-plus species, it's a national treasure. My visits are fondly remembered, and starting today you can visit some of the best of the zoo from the comfort of your iPhone.