Making GZDoom Beautiful

[Xeo]

I was referred here by someone over at doomworld.com because I've been on a crusade to find a Doom source port that is both visually appealing and coop-multiplayer-mode friendly. GZDoom looks like it'll fit the bill where other source ports don't. I come here having tried the Doomsday and Zandronum source ports and I've been able to find resource packs for many graphical and audio improvements for those ports, but I've been having some difficulty locating suitable ones for GZDoom.

So with that being said, if you wouldn't mind taking the time to help me compile a list of resources for GZDoom, please list the best resource pack you're aware of for each of the following:

Doom/Doom 2:
[*]High Resolution Texture Pack
[*]High Resolution HUD
[*]High Resolution Sprites
[*]3D Models
[*]High Resolution Sound Effect Pack
[*]High Resolution Music Pack

Heretic:
[*]High Resolution Texture Pack
[*]High Resolution HUD
[*]High Resolution Sprites
[*]3D Models
[*]High Resolution Sound Effect Pack
[*]High Resolution Music Pack

Hexen:
[*]High Resolution Texture Pack
[*]High Resolution HUD
[*]High Resolution Sprites
[*]3D Models
[*]High Resolution Sound Effect Pack
[*]High Resolution Music Pack

[Rex Claussen]

DooM: [*]3D Models

Willem Sitter's Site for Models

[Kappes Buur]

Nash already collected a bunch of add-ons:
http://forum.zdoom.org/viewtopic.php?f=37&t=24346

Personally, I usually play the latest 2.1.x with PFenh.pk3 and DrVenom8's brightmaps enabled, for that extra zing.
And if the map is for vanilla DOOM or DOOM2, then I play with 1.8.x and use the aforementioned plus QLeffects.