Ellen had some fun with "Today" show host Matt Lauer, first photoshopping him into an BDSM outfit ahead of the racy "50 Shades of Grey" premiere, and then this -- a clothes-tearing sexy moment with Florence Henderson. Your move, Lauer.
After "The Voice" judge Gwen Stefani told Ellen she loved to sleep but doesn't really have much time for naps, she got the surprise of a lifetime: The most comfortable napping chair... with fellow judge Pharrell Williams in it.
In honor of "Madonna Week" on "The Ellen DeGeneres Show," the daytime talk show host secretly taped her audience singing "Vogue" during the pre-show warmup. Turns out, nobody really knows the words to the iconic 80s song.
6-year-old Kai Langer sings with Bruno Mars. Need we say more?
There's nothing more fun than watching Ellen prank her own staff. This one had the talk show host sending her producer Andy and his assistant to a haunted house. It's kinda priceless.
After a series of racy and hilarious "Fifty Shades of Grey"-themed gags starring the digitally-enhanced "Today" anchor, DeGeneres did it again. This time giving Matt Lauer an awesome foot fetish.
Ellen pulled one big surprise on a kindergarten teacher from New Mexico who had no idea what she was in for. We dare you not to cry.
Ellen had some fun with the Biebs, scaring the daylights out of the Canadian-born singer just before his Comedy Central roast.
Will Smith gave 'The Fresh Prince of Bel Air" fans a treat when he sang the theme song to his 90s hit sitcom. Smith had the audience on their feet during his performance.
After being the butt of Ellen's jokes for weeks, Matt Lauer finally got his revenge,
filling Ellen's car with... wait for it, Ping Pong balls.
Ellen surprised Jennifer Aniston, taking the actress to her old stomping ground: Central Perk Cafe. Watch Aniston's reaction as she tours her old set.