No argument on Bomer - the silvery colour scheme makes that picture seem highly relevant
I don't think Pratt's the strongest actress, and she's too much the straight-up Amazon, it seems to me, for Murphy.
TJ Thyne is probably fine (ooch, sorry; that rhyme was unfortunate), but for some reason, I see Kevin Smith in my head when I read Butters' lines.
I also think of Will as being played by Seth Green, but that's no doubt the influence of
Buffy.
I could buy Urban (or, oddly, David Wenham, don't ask me why) as Kincaid. I tend to think of Morgan as older. I found the TV choice for Morgan too dull. Morgan is not boring! In my head, Morgan looks like a combination of David Bradley (Argus Filch from the
Harry Potter movies) and Brian Cox. I think Urban is quite underrated as an actor; he was very effective (and very different) in
The Lord of the Rings and
The Bourne Supremacy.
I didn't like any of the casting choices made for the TV series, except for Paul Blackthorne as Harry and Terrence Mann as Bob - though a very different version of Bob. Everybody else was a resounding
meh or worse. (Valerie Cruz as Murphy?! Ack.)