This month's edition of List This! recounts the most unbelievable, unforgettable and memorable moments in the history of SmackDown.

The April 20th edition of SmackDown marks the show's 400th installment, making it one of the longest running and most successful sports-entertainment programs in broadcast television. With 400 shows strong, SmackDown tops other monumental TV series including The Simpsons, Law & Order, Friends, Cheers and M*A*S*H.

A ratings powerhouse, both in its primetime slot and as the CW Network's top-rated show, SmackDown continues to dominate broadcast television on a weekly basis. More importantly, in its eight-year tenure, SmackDown has hosted some of the most extraordinary events in WWE history and all of television. Relive 10 of the show's greatest moments this month exclusively with WWE.com's List This!