Yes, LADY FROM SHANGHAI has Everett Sloane and Glen Anders as two truly
sleazy lawyers and a nearly surreal courtroom scene.
 
These 2 aren't Welles, but I don't recall if anyone has listed
a) REVERSAL OF FORTUNE, with Ron Silber as (still-alive) Allan Dershowitz
(BTW, is AD still on OJ's defense team?)--an interested case of a hard-
driven lawyer whose devotion to principle overcomes his aversion to his
clients (and did you notice Scar's line, "You have no idea!" in THE LION
KING?)
 
and
b) REGARDING HENRY, where Harrison Ford has to suffer brain trauma to become
a human being and a noble, instead of sleazy, lawyer.
--Don Larsson, Mankato State U., MN