Hehehe I was just looking through the do ents lay eggs page (
http://forum.barrowdowns.com/showthread.php?t=13206)
So I thought I might drop in here.
I always had the picture in my head of an ent being a tree with a general human shape to it. Give or take some Arms or legs and maybe a few other branch limbs but still in a human shape. I think the Treebeard from the movies fitted with the rough idea I had in my head.