You never know what's going to happen when HEIDI KLUM stops by! The gorgeous supermodel and "Project Runway" host is always doing something outrageous -- whether it's competing in a motherhood obstacle course or taking off her dress in the middle of the show! She recently gave birth to a baby girl and will tell us all about her. And if she weren't busy enough, she has also partnered with The Heart Truth to help raise awareness of women's health. Then, Olympic snowboarder SHAUN WHITE is also well-known for being outrageous. His unbelievable tricks won him the Gold Medal at the last Olympics and he's been working on even more -- will he be able to get the gold again? Also, if there were a gold medal for juggling, ANTHONY GATTO would have one! He's considered the world's best juggler and today he'll be showing off his unbelievable talents -- have you ever seen anyone juggle with their head before? You will today! And Ellen's audience better brush up on their trivia -- today Ellen is playing another round of "Know or Go" -- and we all know what happens when they don't know!