Depends... My favourite is #144, very interesting information in it...and I think #256 but I might be remembering wrong
However, I guess all are interesting in their own way, depending on what you wantto learn from them. Some talk more about ME-related issues, others are more personal and let you find out more about Tolkien himself.
I been reading about the Letters of the Professor, but where can I find a set of my own?I belong to a Tolkien Reading group on yahoo, but I can't read along because I don't have the letters. Where did you buy yours Beren One Hand?
__________________
Hey dol! merry dol! ring a dong dillo! Ring a dong! hop along! fal lal the willow! Tom Bom, Jolly Tom, Tom Bombadillo!