In Kino der Toten, go to the theater when zombie dogs are coming.

Near the turret you will see a set of stairs, on the edge of the stairs near the turret you will see 3 pieces of wood (still attached to the stairs).

If you stand in the right spot on this wood, the dogs will simply stand right next to you and let you kill them.

PS: if you at still getting attacked, adjust where you are standing!