. >> reporter: nick cannon seems to be one of the hardest working guys in show business.lent" host is a producer, producer, husband to mariah carey, and father of twins. >> it is an interesting juggle and transition. but, you know, i got ahold of it. >> when he was diagnosed with lupus in 2012, he took it in stride. >> i took my test and turned it into a testimony. i'm in this fight with you, and we can get through it. >> reporter: more than a mill and a half americans have lupus, an autoimmune disease in which the body attacks healthy tissue. it has no known cause or cure. cannon found out he had lupus when his kidneys failed while on vacation. >> it was really scary at the beginning. it is turn the cameras on me. see where this takes us. >> reporter: those cameras led cannon to film what he calls his incredible health hustle, a youtube series documenting his journey with lupus. >> getting my kidneys back strong. >> i called it the health hust until the sense of just make sure we're constantly going and not giving up. >> reporter: he is a tireless advocate for the lupus

. >> especially for host, nick cannon. he often finds himself roped into the auditions. >> i love that feeling of, this could go either way. >> reporter: agt's also shown the family-friendly side of one of radio's most notorious personality. howard stern. are >> parents are throwing their kids on my lap, like i'm santa claus. we want to see people succeed. we're not here to shut them down or goof on them. we're hear to boost them up and be helpful. >> and by summer's end, one talent will rise above the rest. mark barger, nbc news. >> howard stern and santa claus. there's a sentence never been uttered before. the season premiere of "america's got talent" will be followed tonight by the premiere of a new nbc medical drama called "the night shift." >>> heads up, there's a free ticket giveaway going on. ♪ all night long >> might have you dancing on the feeling too. concord giving out tickets to see lionel richie at the concert pavilion on sunday. you can bet he's going to sing that hit, "all night long." there will be 250 tick

. >> representing for my fellow -- >> nick cannon seems to be one of the hardest working guys in showbizcian, husband to mariah carey and father of twins. >> interesting juggle and transition but, you know, i got a hold of it. >> when he was diagnosed with lupus in 2012, he took it in stride. >> i took my test and turned it into a testimony. i'm in this fight with you and we can get through it. >> more than a million and a half americans have lupus, an autoimmune disease in which the body attacks healthy tissue. no known cause or cure. cannon found out he had cannon when the kidneys failed on vacation. >> turn the cameras on me and see where it takes us. how did i get here? >> those cameras led cannon to film what he calls the incredible health hustle, a youtube series journalling the struggle. >> i called it health crisis. going and not giving up. >> he's a tireless advocate for the lupus foundation of america realizing the awareness can fuel awareness and more importantly a cure. >> i have lupus. lupus doesn't have me. humans. even when we cross our "ts" and dot our "i's", we still run

by the way, they're saying it's over between mariah carey and nick cannon.did we have to say about the google glasses? >> am i crazy or does this sound like an accident waiting to happen, hoda? one more thing to obstruct your vision and distract your attention from the real world around you. >> here's what i have to say about this. i guess it's okay. but why, oh why do you always need to be connected? >> so you' not really saying okay, okay? >> i guess it's okay i said. >> no, but -- >> okay? >> no, it's not okay. >> okay. >> what is that? >> i love our cartoons. >> i love watching those little cartoons. >> coming up, we brought in two women from the rain, gave them brand new looks. >> don't miss the big reveal of our "ambush makeover." >> plus award-winning actress swoosie kurtz is with us. >> that's not her. >> she's coming up. we're going to catch up with her. >> there she is. how cute is she? >> adorable. what's my advice for healthy looking, radiant skin? a good night's sleep... and aveeno®. [ female announcer ] only aveeno® positively radiant face mois

matt recently caught up with the superstar and her husband nick cannon.eir parenting style. >> would do you the introductions. >> come on. i'm with matt lauer. how can i do the introductions. come on. >> what's going on? >> how you doing. i'm good. stopped in for a second. i didn't want to interrupt. >> you got the two little ones and you got nick. which one takes more effort. >> um, well, no. >> it's fun, though, it truly is a family. it doesn't matter what goes on outside of our household as long as everything inside is tight and we enjoy and embrace that union and that foundation that we've built. >> mommy's definitely more firm when it comes to like putting her foot down. it's because you know, when daddy gets home, the loud voice. >> the time-outs and things like that, that he'll give them it's easier for him to give than the time-out sitting in front of him. but for me if i'm there, they think i'm a softy and they can get away with it. you have to go have a time out in that room over there. >> the conversation goes on from there. >> no question. of