By now, you know the spiel: most Hollywood executives see movie-based games as nothing more than merchandising, no different from action figures and themed socks. Therefore, they could not give a rat's ass about quality, so long as the game sells. And therefore, most movie games are crap. And blah, blah, blah.
Gamesradar has made a list of the games that failed to be horrible cash-ins and stuck out in their minds as glorious reminders of everything they liked about the movies.