Last week, GREYSON CHANCE gave his biggest performance ever at Canada's We Day. Ellen will connect with him today to hear all about the exciting experience.

Whenever JENNY McCARTHY stops by, it's always a fun time! Whether Ellen is dropping her in a dunk tank or scaring her with a giant panda, Jenny is up for anything. She'll have a lot to talk about when she shares her new book with Ellen; "Love, Lust, and Faking It: The Naked Truth About Sex, Lies, and True Romance."

You may not know the name ARMIE HAMMER now, but you will! He's in the new movie "Social Network," and is getting a lot of attention -- there's even talk of an Oscar! He's introducing himself to Ellen today.

RASCAL FLATTS has been together for 10 years, and they're still going strong. Today they're here to perform one of their greatest hits before they chat with Ellen.

Your jaws will drop when Ellen welcomes quick-change artists SOS & VICTORIA.