Ellen is always making sure HOWIE MANDEL feels comfortable, even it means sealing him in an inflatable ball! The hilarious guy is about to hit the road on tour, and is making Ellen his first stop!

For years, KEN JEONG has been a licensed medical doctor. Now he's one of the most talked about comedians, and starring on "Community!" He's here to tell Ellen how it all happened.

MIKE TOMPKINS has become an internet sensation with his web videos -- where he not only sings, but creates all the music -- with just his mouth! Ellen welcomes him here today to recreate one of the popular videos!