We have used the crucifixion scene from the video "The Miracle Maker" It is a very realistic claymation type of animated video. The crucifixion scene is very powerful - in fact, if you have not seen this movie about the ministry and life of Christ I highly recommend it. I have used it to teach the Road to Emmaus, Holy Week and the Crucifixion.
The studio has posted it on YouTube. Unfortunately, it has some ads with it.