Alexander Coleman over at Coleman’s Corner in Cinema elucidates on the film far more successfully than I might have been able to, although I do still plan to put down something on it, eventually.
“Sam Rockwell plays Bell, and contributes to Jones’ vision a performance of nearly startling emotional complexity and breadth. The words “nearly startling” should not take away from Rockwell’s turn; it is only nearly startling because for those who have experienced Rockwell’s performances, his starring tour de force performance in Moon will not be seen as altogether surprising. There is already a doomed existentialism to Rockwell, which at its fiercest is unshakable. Especially desperate moments in films such as The Assassination of Jesse James by the Coward Robert Ford and Snow Angels are punctuated by Rockwell’s fidgety earnestness and convincing verisimilitude. Here is an actor who always possesses an air of doom and attrition. Rockwell’s isolated self is an amazing performance, worth seeking out.”
You can find it here.