Colin Firth, Jeremy Irvine, Uggie the Dog, Colbie Caillat

He's the stuttering King of England, Meryl Streep's singing boyfriend in "Mamma Mia" and Bridget Jones' main squeeze. COLIN FIRTH is as versatile as he is charming, and last year he showed up the day after winning his Oscar to show it to Ellen in person! Today, he's here to tell Ellen about his role in the thrilling remake of the classic film, "Tinker Tailor Soldier Spy." And JEREMY IRVINE is the shining new star of Steven Spielberg's epic new film, "War Horse." He's here to tell Ellen what it was like acting up against a four-legged co-star and taking direction from the biggest living legend in Hollywood. Then, he's the star of one of the biggest films of the year and he's not even human! UGGIE THE DOG wowed audiences with his amazing performance in "The Artist," and he's here with his trainer, Omar Von Muller, to meet Ellen for the first time! Plus, COLBIE CAILLAT performs her big hit, "Brighter Than the Sun" from her CD, "All of You."