Hamilton tried to pass Alonso on the outside of the first corner. After being forced off, he complained afterwards about Alonso's behavior. What did he expect from a 2-time World Champion? Perhaps Massa would have let him through?
He pulled a similar stunt last week in Monza. Since there wasn't any room, he cut through the chicane and passed (?) anyway - gaining a position. Why wasn't he penalized? In most other racing series that would have been unacceptable.
However, given Alonso's actions in the recent MacLaren/Ferrari case, I would much rather see Hamilton win the championship. In fact, I feel sorry for Ron Dennis - IMO he was probably unaware of what was going on, and mad that Alonso got off without any penalty whatsoever.
Getting back on topic, MotoGP is much more entertaining to watch! These guys race wheel to wheel or is it shoulder to shoulder and aren't afraid to fall at 200mph.