As comic book movie adaptations go, Ghost Rider was a middling effort, with good action sequences but a weak plot, uneven pacing, and forgettable villains.
The CGI was imaginative but not as good as it needed to be to really sell the flaming skull and bike scenes. I did think the penance stare was pretty cool.
The actors did the best they could with the material and the film fortunately didn't take itself seriously. It even featured a number of intentional camp humor bits where it seemed to be making fun of its own schlock.