When I first joined it was I'm Yours, Crazy G followed by Five foot two. This was in 2008 the year after the sad passing of Brother Iz, so Over the rainbow became an Tribute anthem to his great contribution to the Ukulele.
As time passed and folk discovered the mighty Domiator, the forum was awash with all the great tabs from his site, which I still use all the time. Aldrine did a lesson and the following week lots of versions came about.
Then there is Jake! He was the reason I fell in love with all things Ukulele, and at that time his tabs where available from Dominators site, alas not anymore!
As the years have passed I've heard Mozart to Led Zepplen and just when I think I've heard it all, someone plays something I'd never have believed could be played on Ukulele. So onward mighty Uke and surprise me some more.