Golden Doorknob

I'm working with Corinne and Matt on the Golden Doorknob project. Our idea as of right now is a live-action video game. I guess the general plot is that Waluigi locks Peach in a room and takes the doorknob away, so mario can't get to her. Mario has to chase Waluigi down in order to save Peach, but he has to go through different games (i.e. Pac-Man, Wii Tennis, and Tron) in order to do so. It's a little bit more complicated than that and there's going to be a real world and a game world, so we need to distinguish between the two. Anyway, we were talking about it and we think the biggest obstacle we are going to face is in post. If you guys have any suggestions of effects or filters to give it more of a video game look (sort of like Scott Pilgrim), we would love your input. Thanks!