Screen Grabs chronicles the uses (and misuses) of real-world gadgets in today's movies and TV. Send in your sightings (with screen grab!) to screengrabs at engadget dot com.

It may not share the same level of name recognition as FaceTime (or heck, even Fring), but Tango's multi-platform videocalling app is still a very real alternative. So real, in fact, that it was just used in an episode of The Big Bang Theory as a highly fictional (and severely busted) character makes an outlandish videocall to a mythical group of friends. Or was it all just a dream? Hop on down to the source link (and fast-forward to the 13th minute) to find out.

[Thanks, Sowmitra]
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Tango videocalling app stars on The Big Bang Theory

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Screen Grabs: Tango supplants FaceTime for Big Bang Theory videocall