I ended up going to see it last night. Overall, I found it rather enjoyable. But it was sort of strange. For dialogue, it seemed like they had two different writers instead of one (one for the good guys, and then one for the bad guys). The lines for Johnny Blaze and such were usually amusing in a good way, while the dialogue for all of the villains were awful (not to mention their awful acting). For example:
"I'm going to retire your ghost rider. And then I'm going to retire . . . you."
Still pretty amusing though . . .