then watch the cliff's notes version. Death is basically a recap of the most important events that occurs in Evangelion episodes 1-26 with some new animation strewn about. It's brief but will give you the information you need before you go on to watch End of Evangelion. But I think the best way to experience Eva is to watch every single episode. It's still good nonetheless. Rebirth is really the first 25-30 minutes to End of Evangelion(it is called Air in EOE). This is good to watch if you've never seen the series.