Watch James Corden Get Into Hijinks With Taylor Swift, Ed Sheeran, Sam Smith

Eager-to-please British late-night host James Corden may have reached a new apex of jolly starfuckery. On last night's episode of his Late Late Show, Corden recorded an endless 14-minute comedy bit backstage at a big Jingle Ball pop concert in Los Angeles. In the clip, Corden takes over as general manager of the Forum, which…