"Enemy at the Gates" is no good at all. Where are zombie cossacks with pikes and bows? Where is glorious Russian Bear Cavalry? Where are balalaikas and razvesistaya klyukva?

Talking about documentary films, check this one: OZON.ru - DVD | Великая война: Сталинград. Серия 4 | PAL | Интернет магазин DVD: купить фильмы / 178

(Perhaps you can find it somewhere as Velikaya.voina.p04.avi).