Here's a news page with video from the recent ukulele festival on the Big Island. Featured in the video is Nicholas Acosta, of whom we've written before, a 12-year old ukulele wiz who plays beautifully despite having been born without a right arm below the elbow.
Also on the video is Boo Takagi (nice double neck!) and lots of Ohta-San (beginning about the 12:00 mark). If you've never seen Ohta-San play, do give this a watch, especially if you're used to the pyrotechnics of players like Jake Shimabukuro. Ohta-San is a study in restraint, and will show you how much beauty you can gently coax out of an ukulele. Of course, he's the Master, and makes it look easy, but it's a wonderful style to develop. Link