The Best Trial Movies
The following list is by Patric M. Verrone, in an article from the ABA journal/November 1989.
THE 12 BEST TRIAL MOVIES
1 The Passion of Joan of Arc (1928)
2 "M" (1931)
3 Twelve Angry Men (1957)
4 The Wrong Man (1957)
5 Paths of Glory (1958)
6 Anatomy of a Murder (1959)
7 Inherit the Wind (1960)
8 Judgment at Nuremberg (1961)
9 The Trial (1962)
10 To Kill a Mockingbird (1963)
11 A Man For All Seasons (1966)
12 The Verdict (1982)
Very interesting list; I tend to agree, although I haven't seen all yet (Wrong man, Anatomy of a murder, Inherit the wind & A man for all seasons).
The one I would include as well though would be Adam's Rib. A light trial comedy but definitely top 5 material.