The Ellen DeGeneres Show Season 5 Episode 52 Christina Applegate, Bobb'e J. Thompson, Backstreet Boys, 700th Show

On the 700th episode of The Ellen DeGeneres Show, Ellen welcomes an amazing lineup of guests. First, Christina Applegate sits down with Ellen to talk about her new sitcom, "Samantha Who?" where she stars as a woman who wakes up from a coma with amnesia and has to rediscover herself. They also discuss motherhood, as Christina recently had a baby girl.

Next, Ellen welcomes child actor Bobb'e J. Thompson, known for his roles in "Role Models" and "The Tracy Morgan Show." Bobb'e talks about his experiences working in Hollywood at a young age and shares some funny anecdotes about his co-stars. He also shows off his dancing skills, which he's been developing for an upcoming role.

Later in the show, Ellen surprises the audience with a special guest appearance from the Backstreet Boys. The iconic boy band performs their hit song "I Want It That Way" and talks to Ellen about their upcoming Las Vegas residency. They also play a hilarious game of "Never Have I Ever" with Ellen and the audience.

To celebrate the 700th episode, Ellen takes a trip down memory lane and shares some of her favorite moments from the show's past, including interviews with Oprah Winfrey and Michelle Obama, and some of the funniest audience participation segments. Ellen also surprises one lucky audience member with a trip to Australia and tickets to attend the "Ellen Show" there.

Overall, this episode is full of laughs, surprise guests, and heartwarming moments as Ellen reflects on the show's incredible run and the impact it has had on her guests and viewers.