It's a mod that adds some new commands to hl, such as:
ent_spawn <ent> <models/model.mdl> - Spawns entity (You can specify a model like in Spirit)here is a video made using it, and here is the download.
ent_scale <scale> - Scale target entity
ent_do <animation> - Play animation on target entity
ent_freeze <time> - Freeze target ent for an amount of time
ent_body - Change target entity's head
ent_skin - Change target entity's skin color
ent_show <1 or 0> - Show ents ingame
ent_peace <1 or 0> - Kinda like ai_disable for hl2
and more
Screenshot:
http://web.telia.com/~u39303926/chmod_hehu.jpg
Enjoy