I am also intrigued by this Scott Glenn business. I had no problems with Perlman, though.
The more I think about it, the more this thing was filled with all kinds of little details that really interested me, made me want to get to know these characters and this world more. William Lucking's character, for one. There was a great little shot of him- He had just given a testimonial in the meeting to Jacks, and how proud he was of him, how his Daddy would have been proud, then cut to them outside of the boxing ring, when Jacks mentions how he'd like to take the business legit- there is this great look on Lucking's face, a look of disbelief, disappointment.
Anyway, damn good stuff.