Microsoft Chairman Bill Gates presented a lighthearted 12th and final keynote speech at CES in Las Vegas on Sunday. After speculating on the future of technology—Gates predicted that high-definition screens on everything from televisions to cell phones will be all the rage, as will "natural user interfaces" like touch screens and voice-recognition software—Gates screened a mockumentary about what his last day might be like when he retires from Microsoft this summer. 

"This is my last keynote," Gates told the crowd of 4,000 while introducing the short film. "In July I'll move from being a full-time employee at Microsoft to working full time at the [Bill and Melinda Gates] Foundation so this will be the first time since I was 17 that I won't have my full-time Microsoft job. I'm not really sure what that last day is going to be like. It could be a bit strange, so I asked some friends to help me prepare for that."

In the eight-minute film, a bumbling Gates begs jobs and career advice of Matthew McConaughey, Jay-Z, Bono, Steven Spielberg, Jon Stewart, Al Gore, Hillary Clinton, and Barack Obama, all with hilarious results.

 

To cap off the keynote speech, Microsoft Entertainment and Device Div. President Robert Bach challenged Gates to a game of Guitar Hero III. Bach invited out the reigning Guitar Hero title holder to play Guns N' Roses' "Welcome to the Jungle," while Gates invited out none other than Slash to play the real deal on his Les Paul. See below: 

 Check out more from Gibson at CES here!