Anyone who has tried to navigate down a busy sidewalk while dodging people who are obliviously looking down at their phones will appreciate this latest prank by ImprovEverywhere. Their latest mission in New York City was to pose as municipal workers, with orange "Department of Transportation" vests, and act as "Seeing…

Most of us love the light shows splashed across the sides of buildings for Christmas or Columbus Day or other events. They're adorable! Here's Improv Everywhere taking a timeout from the usual business of, well, confusing everyone around them to put on a light show for Grand Central's 100th birthday.

Waiting outside of Best Buy? Cliché. Furiously refreshing Amazon? Amateur. The real Black Friday pros this year lined up outside of a Manhattan dollar store. Or at least, that's what Improv Everywhere would have you believe.

If you're not big into the summer Olympics because track and field just doesn't get you going, infamous pranksters Improv Everywhere have a nice alternative for you. Their latest MP3 experiment takes on the Olympic games in a characteristically bewildering style.

What would you do if you were in some random parking lot—Lowe's, let's say—and all of a sudden dozens of car alarms started going off at once? Would you shrug it off like the dead-to-everything city dweller you are? Maybe duck and run and wet yourself because Galactus is obviously coming to devour our planet? Improv …

Improv Everywhere! They're the best. Especially when they pull off large-scale pranks at events used to a certain degree of solemnity and self-importance. Like, say, TED. Here, Charlie Todd and his merry band present the most disruptive spinning beach ball of death of all time in the middle of a staged TED keynote.…

Yes, the megaphone was attached to a podium that said "Say Something Nice", but you half expect some New York jackass to hijack the megaphone and curse everybody out (maybe it was edited out!). But seriously, watching this will brighten up your Monday.

Over 3,500 people marched along Manhattan's Hudson River recently, converging from two separate starting points on Nelson Rockefeller Park. And then? Then they had a massive glowstick dance party. That's right: it's another Improv Everywhere MP3 Experiment.

After wanting to use a grenade launcher on the ice cream truck parked near my house this weekend, I wish this video wasn't a stunt by Improv Everywhere. I definitely want a real life mute button.

My goodness, is there anything more joyless than a social media conference? Well, okay, probably yes if you're the type of person to take things hyper-literally. But! For the rest of us, Improv Everywhere's mischievous band of insta-musical revelers couldn't have picked a better target than Gel 2011.