Just because it was one of my highlight musical moments of last year, really:- Hester Goodman's singing on "Teenage Dirtbag" with the Ukelele Orchestra of Great Britain is now available on the concert DVD
http://www.ukuleleorchestra.com/main/home.aspx?SessionKey=
and for a few more days on the iPlayer
http://www.bbc.co.uk/iplayer/episode/b00pdz2f/BBC_Proms_2009_Prom_45_Uku...

This is a similar performance, sound not great though: