Proof is a Pulitzer Prize winning play, so the adaptation from stage to screen should be taken very seriously. Cue Academy Award winning director John Madden (Shakespeare in Love), Academy Award winning actor Anthony Hopkins (The Silence of the Lambs), actress Gwyneth Paltrow (Shakespeare in Love), and fill in the other major roles with the young and talented Jake Gyllenhaal and the under-appreciated Hope Davis. Then get the dude that wrote the play to adapt it himself.
Boom! You’ve got a recipe for above average down pat.