today, one of your favorite sharks, lori greiner, is here, playing for charity. re's one thing lori knows how to do, it's make lots and lots of money. so let's play "who wants to be a millionaire"! [cheers and applause] [dramatic music] ♪ hey, everybody, welcome. everybody is fired up, because it is "shark tank" week. [cheers and applause] so let's bring out a shark. please welcome to the stage♪lor. , who sa sn'have i'm known as "the shark with a heart," and it's beating like crazy. >> i feel like there was a 50/50 chance you were gonna run up those stairs instead of come out here. >> i, uh--listen, i am not good at game shows, but i'm doing this for my charity. >> that's the main point here. >> yeah. [cheers and applause] >> and what charity are we playing for? >> junior achievement, which is amazing. >> tell me a little something about it. >> um, junior achievement is great because it doesn't matter who the child is, what age, what background. it doesn't matter-- socioeconomic, whatever it is-- it is for everybody, and it teaches them how to become entrepreneurs