Take these pixel-perfect screenshots for example:
Before (0x aniso and 0x FSAA):
http://home.comcast.net/~jeff250/descent/before.png
After (8x aniso and 8x FSAA):
http://home.comcast.net/~jeff250/descent/after.png
If you compare the two pictures, you'll notice that the \"after\" picture looks much less blurry viewing the textures in the distance (at a sharp angle), especially the ceiling in this example. This is the anisotropic filtering doing its job. Also, you'll notice that the edges between walls, floors, ceilings, and the such are much less jagged or pixelated and appear more smooth. This is the antialiasing taking its effect.
Since D2x is vastly CPU dependent, depending on your card, you can probably crank your aniso and FSAA to its max, or at least farther than you can for other games. I have a Geforce FX 5950 that would normally sh*t its pants with 8x FSAA, but there's no performance difference with D2x.
I've posted this in response to some of the screenshots I've seen posted here, so I'll expect better in the future. Make D2 look it's best.
