Let's see, for lazy people like myself, washes are a gift.
We can go down the line with some examples.
Steel Legion/Cadians

Black Primer. The metal has a Chainmail overbrush, and Badab Black wash. The other areas are mostly drybrushed. Edit - the Gold is shining gold with a Gryphonne Sepia wash. /edit This is the 2nd oldest epic paint scheme I haven't changed (my Eldar are coming later, and are in the process of being repainted, and my Baran barely use washes).
Minervans:

Fenris Grey undercoat with Codex Grey flashes, metal overbrushed with Chainmail, and hit everything with Badab.
Vanaheim:

Primed white. Desert Yellow undercoat with Gryphonne Sepia wash and a second wash of Gryphonne in the panel lines on the Valkyries. The Infantry got a wash of Gryphonne over Desery yellow, and some Devlan Mud in a few deep recesses.
Eldar:

White Primer. Blazing Orange with Baal Red wash, Mordian Blue with Asurmen Blue wash, and Dheneb Stone with Devlan Mud wash. An interesting comparison can be drawn here between the Wave Serpent and the Wraithguard. The Wraithguard are painted almost identically to the Serpent, except the Serpent has Ogryn Flesh wash on the orange instead of Baal Red. A significant difference.
Finally, and not strictly Epic, but another good example, BFG Tyranids:

The only things on these I painted are the Claws, Carapace, and Engine (not visible). The entire lower section got a single coat of Leviathan Purple over white Primer. The carapace was basecoated with Hormagaunt Purple, washed with Leviathan, the edges picked out with Shadow grey, hit with levaithan again, and finally edged with Shadow grey (again) then Space wolves grey in a streaky pattern. The claws are basecoated in Bleached bone, washed with Ogryn Flesh, then progressively highlighted with Bleached Bone and skull white.
Now my fingers are tired and I must rest.

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SG
Ghost's Paint Blog, where everything goes that isn't something else.