I did a lot of it in a previous life. Had several Grove's recurves- no sights, only instinctive shooting. Currently have one of the Grove's and one longbow.
Now much more interested in the art, craft and history, including military history of the bow.
For anyone interested, here's a link to the UK History Channel's series on the medieval longbow. Also added a link from the UK History Channel on the legend of Robin Hood- using a bunch of the clips from the Russell Crowe movie (good movie IMO). Both documentaries dovetail nicely. These type youtube links get taken away frequently, so watch them soon or you'll have to do another search for a link.
http://www.youtube.com/watch?v=5tuJvei2Uw8
http://www.youtube.com/watch?v=FsaUJpPoFm0