The Latest: T-Mobile trots out celebrities, 4 ads (Yahoo Sports)

T-Mobile's first ad of the night has aired, and there are still three more to go. The first one shows pop star Justin Bieber narrating a mock history of end zone celebrations and features Rob ''Gronk'' Gronkowski and Terrell Owens. Coming up in the third quarter, another T-Mobile ad will bring together Martha Stewart, Snoop Dogg and several marijuana puns.