LL Cool J reveals the one thing that drives him “bananas,” and iCarly’s Miranda Cosgrove lays out her plan for helping the environment. Plus, Project Runway’s Kevin Christiana lists his biggest fashion pet peeve and actress Gabrielle Union has a message for long-winded phone talkers.

The holiday season is filled with good cheer, festive meals, family get-togethers … and plenty of stress! Celebrity chef Rocco DiSpirito has advice for overzealous hosts, and Patti LaBelle wants to have a word with anyone helping out in the kitchen. Plus, actress Gabrielle Union shares her biggest pet peeve this time of year, and hear what Gabby Reece has to say before you over-indulge.

What's Magic Johnson's biggest pet peeve? He's heading backstage to share it in the latest edition of "Celebrity Sound-off"!