It's Day 4 of Ellen's All Terrain Game Week and the competition is getting intense! There's just one more day until someone drives home a brand new GMC Terrain, and today's contestants will do anything to make it to the end! Someone at home is winning one too, so if you haven't entered to win, don't miss out on your big chance! That's not the only exciting gift Ellen is giving away! All month long she's got huge surprises in store for her audience during Yay! May! Today, one lucky audience member will win something that will change their life! Ellen always has a great time when the very sexy ROB LOWE visits. He's always up for some fun with Ellen, whether skiing down a mountain, sledding down a giant inflatable slide, or simply getting his hair washed! Now the hilarious guy has a brand new role on "Parks & Recreation" -- his first role on a comedy show. It's a good thing Ellen trained him not to laugh! Then, COMMON is one talented guy; he's an amazing Grammy-winning rapper and now he's proving that he's a skilled actor too! He's starring with Queen Latifah in the new movie, "Just Wright," and will be stopping by today!