How do you trigger a sequence on a model

I was told to bring my post over here
http://www.facepunch.com/showpost.php?p=19360550&postcount=1010

How do you make a Model do a Sequence? Such as a door with a fall sequence? I have tried with a prop_physics and scripted_sequence but i could never get it to work. What entities would i use for both and how?