The New Kids on the Block and The Backstreet Boys performed together a mash up of their popular songs at the American Music Awards. During the performance, NKOTB's Joey McIntyre did a spin and his hand hit Jordan Knight's mic and it nearly slammed in his face. Watch the video. Jordan tweets after the AMA: "I'm glad I still have my teeth.... that mic smacked me right in my grill!!!" And his lips are swollen. Poor guy.