In a charged political climate where even small missteps can spark a brand backlash, many of this year's Super Bowl advertisers are sticking with the safest bet in the playbook: comedy and celebrities. Much like last year's Super Bowl , the vast majority of the big game ads released so far are playing it safe. Advertisers hope that A-list stars will be a shortcut to attention in the crowded field of commercials, and that humor will leave audiences feeling uplifted and warm toward their brand. "