Along The Path

There are some Skills in Diablo 3 that will damage all enemies in the path that the Ability takes. The shape of the path depends on the Ability used. Along the Path Skills include those that travel in a straight line.

The Following Is A List Of Each Class' Skills That Inflict Damage Along A Path:

Barbarian Skills That Travel Along A Path

Ancient Spear (Harpoon)

Demon Hunter Skills That Travel Along A Path
Chakram
Cluster Arrow (Cluster Bombs)
Impale (Overpenetration)

Monk Skills That Travel Along A Path

Dashing Strike (Soaring Skull)
Wave of Light

Witch Doctor Skills That Travel Along A Path
Zombie Charger 

Wizard Skills That Travel Along A Path

Spectral Blade
Energy Twister