Stevealicious! Pop star Fergie made a surprise appearance at the Los Angeles Clippers game on Wednesday, Jan. 7, and no one enjoyed the show more than the team's owner, billionaire Steve Ballmer

The former Microsoft exec, 58, sat courtside at L.A.'s Staples Center to take in Fergie's performance. As the Black Eyed Peas singer, 39, belted her latest single "L.A.LOVE (la la)," Ballmer got in on the fun, showing off some incredible dance moves that rivaled those of Fergie and her backup dancers. 

Wearing a striped polo shirt and khaki pants, the businessman was captured flailing his arms about and making wild facial expressions as he grooved to the music. 

Fergie showed her appreciation for Ballmer's fancy footing, retweeting a video from the Clippers of the team's owner getting down. The performer's husband Josh Duhamel also nodded to the moment on social media, tweeting "I love Steve Ballmer" and sharing a clip of Ballmer dancing to his wife's voice. 

Ballmer had a good reason to celebrate, as his team defeated the Los Angeles Lakers at the game. The Clippers beat their hometown rivals by a score of 114 to 89.