Hey everyone, i just found about this gem of a channel.
One guy is making SFM movies within the Black Mesa, following the games story with amazing details and animation. Plus some new touches.
1st episode: Half-Life: Anomalous Materials [SFM]
2nd episode: Half-Life: Unforeseen Consequences Part One [SFM]
I think the animations is smooth, though a bit unfinished and rushed.
But the story and added details are great!