There are few roles as memorable as TOM SELLECK as "Magnum P.I." -- but he's adding another one to the list! Now he's in the show "Blue Blood," and will tell Ellen all about it. The entire cast of "Modern Family" is absolutely hilarious, including the young RICO RODRIGUEZ. He's stopping by to visit Ellen again -- but only after he rumbles around Target with an Icee! In just a few months, BRUNO MARS has become one of the most popular musicians around. The incredibly talented singer/songwriter is here to perform one of his amazing songs for Ellen. If you don't yet follow Ellen on Twitter -- you should! Today she's answering questions from Twitter in her popular segment, TWITS & ASK. You might finally find out everything you wanted to know!