War and Remembrance is the best min-series ever, and it has the toughest Holocaust scenes.
The most poignant scene was when Jane Seymour was eating the apple on that over crowded box car. Powerful!
The character I thought was best played was Rudolf Höss, the Auschwitz Kommadant. Not that I felt sorry for him or anything, but the actor portrayed him not as a monster, but a man who probably realized that what he was doing was evil, but he was also somewhat "trapped". There's a scene during a gassing where you can see Höss is very uncomfortable with what's going on, but then he quickly notices Himmler was staring at him and he straightens up.