It's Ellen's 1,100th episode! Can you believe it?! If she had a nickel for every show, she'd have... well... we're not good at math, but it'd be a lot of nickels! It's been 1,100 shows full of celebrities, games -- and most importantly, laughs! Ellen will take a look back at all the excitement from the past, and have some huge surprises for the present! Then, everyone has been talking about the MTV show "Jersey Shore." The self-proclaimed "guidos and guidettes" love acting tough, but will they be so brave when they're playing Ellen's most dangerous game ever -- Know or Go? We'll find out when NICOLE "SNOOKI", DJ PAULY D and MIKE "THE SITUATION" step up to play! Also, here to join Ellen on this big day is the beautiful JESSICA ALBA. She was here almost two years ago for Ellen's Mother's Day Show and looked like she was just minutes away from giving birth. Now she's back to tell Ellen about everything that's happened since then -- and to congratulate Ellen on correctly predicting a baby girl!