Hell Knights used in haunted houses.

I think if you are a doom fan you probably appreciate haunted houses, and may know this. I don't know if there has been a forum already but a company called scare factory who does really large scale animatronics for haunted attractions has the demon knight, which is modeled literally after the doom 3 hell knight. I don't know if id had to approve it, but it looks exactly like it. It is used in a few different high-profile haunted houses including The Dent Schoolhouse, Creepy world, and one in Texas I cant quite remember the name of. I point it out because it is cool to know id's designs are still scary years later and managed to transcend the game itself.

This one?

Ha, nice stuff. Now if only there was a Lost Soul cannon...