Saturday Night Live turns 40 this year and is celebrating tonight with a huge, star-studded prime-time special. Though people love to dismiss the show as being less funny than it once was, SNL continues to produce the same hilarious, bizarre and delightful sketches and shorts that it originally became known for. (If you haven't seen "Bird Bible" drop everything and watch it now.) It's endured as a launching pad for some of the world's funniest people, including Gilda Radner, John Belushi, Steve Martin, Jane Curtin, Amy Poehler, Tina Fey, Maya Rudolph, Kristen Wiig, Will Ferrell and more. To ignore SNL is a mistake. In celebration of the show's 40th, Taschen has released a new book including over 2,000 behind-the-scenes photos from the show's launch to the present. Saturday Night Live: The Book is in stores now. Preview some of the photos included in it below.