Matthew Scott Donnelly

The celebrity chef and CNN personality was filming a new show with friend Eric Ripert.

NBC News says it has 'reason to believe' the incident was not isolated.

Petty was discovered unconscious, having suffered cardiac arrest.

You might wind up in the Upside-Down, but you'll look good during the descent.

Sometimes up (the voices!), sometimes down (Luke Bryant taking on Lionel Richie...?), the show definitely ebbed and flowed.

Gaga delivered an electric medley in honor of the icon who died from cancer earlier this year.