Life of Christ as a movie is hateful.
Kill Bill is great family entertainment.
Take your kids to see both! Then ask them who they would rather believe in. I think Uma wins hands down.
I have not been following the discussions of The Passion heavily (many are by people who have not seen the film or that cite that the film will stir up antisemitism). I know that the studios have been reluctant to distribute this film.
I know the backlash that Mel Gibson has gotten over his film (and the personal attacks). I think that some of the controversy (albeit not the overwhelming circumstance) is that he is screening the movie now with subtitles but will release it without subtitles (the cast speaks Aramaic) to the public.
It will be an interesting way to see the film (and I already watch some foreign language films without subtitles and only a basic understanding of the plot) but the full understanding may only come through after several viewings.
There is an asian director who make action films and he tries to develop his characters through scenes without any dialogue. He knows that his films are seen in a number of countries and believes that the viewer can miss significant details by looking primarly at the bottom of the screen to see the next line of dialogue. Sometimes reading the dialogue can also give a line "reading" before something has happened onscreen killing the timing.
I think that there are a number of film afficiandos who like (and understand) Kill Bill who are also looking forward to The Passion (even Harry Knowles has stated that he wants to see this film).