I think everyone realized that a meant-to-be-commercially-successful movie of I, Robot would be less than wonderful. The only story that springs to mind that really works as a movie would be Little Lost Robot -- and even that is extremely talky for film.

On the other hand, I saw a bare-stage script for Liar floating around once, and it lookd like it would work.

Now, van Helsing, on the other hand, I simply view as Castlevania: The Movie. So I'm definitely going to see it.