The Efficacy of Parallax Cubemaps in Source
I went a bit overboard while making a map to test out a custom water texture that I made and realized that it was a perfect opportunity to showcase just how effective cheap game visuals like cubemaps and baked lightmaps can be when utilized effectively. If I didn't have work in the morning, I'd create some fake water caustics via unlit animated decals but I think the point I was attempting to make has been effectively showcased.