Ha ha,
Barrow-Wight. That's a joke, right?
I admit, however, I rather hate the nickname myself...
As for Sean Bean, I think he did a really great job. I am dismayed to have seen his name in some sort of misc. catalog's (I did not order this catalog, nor was it the kind you're going to think it is, I swear on my Steward's Oath) porn movie advertisement.
But as for his role as Boromir, I think his performance was really grand. I don't know about build, height, or weight, but to find someone with the best acting abilities, personality, etc., and STILL find him to be perfect to Tolkien specifications is to expect a little too much. However, for complaints about book-to-film adaptations, visit
http://forum.barrowdowns.com/showthread.php?s=&threadid=9638&perpage=40&pagenum ber=2.