we can't wait for you to be on the mayim bialik, everybody! in the orange room, you know him from "america's go in the orange room, you know him from " america's got talent" and" piers morgan live," the brilliant piers morgan! >> i'm very excited to be here. this little guy i used to know in james, you're the biggest star in hollywood! (cheering and applause) >> james: i love you for that! car you gave me, there was a massive picture of your head on a billboard. all i think was, we used to do "america's got talent" on that studio, and now your head on that billboard and i don't like it! >> james: piers morgan! grammy nominated for his chart-topping hit "see you again" with wiz khalifa and did you know, that song has over 1.4 billion hits on youtube, the very talented charlie puth! how are you? >> i'm good, how are you? >> just relaxing with candles >> i get doing all the preshow rituals before you do all you should. >> james: does that preshow massage do any good? >> no especially not right before. no. >> james: >> james: he's reggie watts, i'

first, former "blossom" star, real-life neuroscientist and current "big bang theory" actress, mayim bialik, takes her turn in the "last call