Lots of good stuff on Ruth.
Of first importance are Hubbard, Bush, Block, Morris, Younger, Lacocque, Sasson, Matthews, Nielson, Sakenfeld, and Campbell.
Of secondary importance are Farmer, Jackman, Murphy, and Atkinson.
Forthcoming is Korpel.
These are bound with Judges: Block, Morris, Younger, Jackman.
These are liberal: Lacocque, Sasson, Nielson, Sakenfeld, Campbell, Farmer, Murphy. There are no particularly good Jewish commentaries on this book.

BJ Mora said,
July 1, 2006 at 10:47 am
Mr. Baggins,
Have you read Duguid’s _Esther and Ruth_?
Mr. Baggins said,
July 1, 2006 at 11:53 am
I haven’t read it, but I own it. I just read his article on Esther in the recent spring 2006 WTJ. It’s outstanding. I always love reading Duguid. One of the best.