[duskwuff]

That seems like a bit of a stretch. While many of the Half-Life games have involved teleportation as a plot element, the vast majority of their gameplay has used more traditional methods of movement -- either walking or driving small vehicles.

[BigJono]

I think that was a joke about the classic HL2 bug that lets you teleport NPCs from waypoint to waypoint during their scripted cutscenes to get through them faster.