Texture packs

Some texture packs you might like
Sphax PureBDCraftA "comic book feel" texture pack

LB RPG RealismPhotorealistic textures (memory intensive)

JJJas0n's FancyCraftNice, clean look

Dokucraft: The Saga Continues Comes in three flavors, light, dark and high.

These and others can all be found at Planet Minecraft