Trivia: In the scene after Hiccup finally gets Toothless' new tail fin to work, and the two are relaxing after they fly through the fire ball, the two are greeted by a group of tiny dragons. This little dragon was actually what Toothless was originally going to be, as he was in the book, until they changed him to a dragon big enough for Hiccup to ride to suit the movie. (00:46:15)
Trivia: Before Toothless brings Hiccup and Astrid to the dragon's nest, we get several shots of other dragons. Pay attention to one shot of a Monstrous Nightmare; it can be seen holding Gloria, the hippo from Madagascar. (Confirmed on the DVD's commentary.). (00:56:50)
Chosen answer: On the selection bar at the top, move the highlight all the way to the left so that "Play" is highlighted. Press the down arrow. "Keep Out" is now highlighted. Press the Enter or Select key (or whatever it's called on your remote).