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9 April 2014, 10:25
Oprah is the latest celebrity the catch Pharrell's infectious 'Happy' bug.
The US TV presenter welcomed Pharrell on to the set for her show 'Oprah Prime', but as she kissed Skateboard P hello she said: "When I see you I just want to dance." So that's exactly what they did.
Catch Pharrell and Oprah doing the 'Happy' dance above.
It's been a busy week for Pharrell who also performed his hit single on Saturday Night Live as well as Good Morning America, where he revealed in an interview what it is that makes him happy, and how long it took to write the song.