Good news for flash mob fans, bad news for the Jamie Foxx/Affion Crockett sketch comedy show. Fox announced this morning that it will air Mobbed, a reality special putting a hidden-camera spin on the “flash mob” phenomenon (large groups of people suddenly showing up in a public place to “perform”). It’s schedule to air on March 31, following American Idol. The network had originally slotted a preview of the Foxx/Crockett summer sketch comedy series, which will premiere in June. Hosted by Howie Mandel, Mobbed will feature “special guests planning extraordinary surprises for friends, family members, loved ones or co-workers” with the help of strangers who put on flash mob performances. The special, from Alevy Prods. and Angel City Factory, is based on a format created by Mandel, Trell and Kitrosser.