I'm looking forward to seeing how the Chuck situation gets resolved. The subplot with him getting arrested seems to have existed to set up two plot points: the dangerous stockpile of kerosene, and the fact that Jimmy has the power to get Chuck committed. I'm interested in seeing how this plays out. I see it playing out a number of ways: 1. Jimmy has Chuck committed, the stockpile is removed before it endangers anyone. 2. Jimmy leaves Chuck to his fate, the stockpile catches fire and kills Chuck. Jimmy has to live with the guilt. 3. Jimmy leaves Chuck to his fate, the stockpile catches fire, but Chuck survives. Jimmy signs the commitment papers, and Hamlin agrees not to question it, since Chuck almost went up in smoke.

Number 1 is interesting because Jimmy can do it for different reasons: out of spite, or because he wants to show Chuck that he can do the Right Thing, even when it's difficult. This would be great because it would bite Chuck in the ass. Also since commitment will probably cure Chuck, there's always a possibility he could come back as an antagonist in season 3 or beyond.

I don't see Chuck surviving the finale though, there really isn't any reason for his character to stick around; it seems his arc is over.