The Golden Globes has announced another batch of presenters, and Katy Perry is on the lineup! The "Roar" singer will present the Best Original Song award at the show's 73rd annual ceremony, executive producer Barry Adelman confirmed to ET's Carly Steel on Thursday. Other newly announced presenters joining Perry include Morgan Freeman, Grant Gustin, Maggie Gyllenhaal, Kevin Hart, Taraji P. Henson, Terrence Howard, Ken Jeong, Dwayne Johnson, Michael Keaton, Lady Gaga, Eva Longoria, Jenni