Bennett stars in the immensely popular “It’s Not Complicated” campaign for AT&T, a series of ads in which he plays the wry, deadpan moderator of a focus group populated by precocious children. “Do you guys think it’s better to be fast than be slow?” he’ll prompt the kids, gathered around him at a comically child-size table. The kids go on energetic, meandering rants about werewolves and islands made of candy. Bennett blinks in response, unamused. The nation, judging by the social-media buzz and YouTube views the ads receive, is very amused.