The most current link I have to a site that details all the available monster scripts (coded animations) is:
http://www.planethalflife.com/workshop/models/ssec_main.htmThe article is by Otis and was written in 1999. So I am not sure if all the sequences are still valid. Probably not. There are sites out there that deal specifically with Coding and that sounds like what you are asking for. I don't touch code, so I can't really point you in the right direction, but Collective.valve-erc.com is probably your best starting point.