Drapes. You'll still need a shower curtain, but install a second pole and hang drapes in front of your shower. It's a great - and easy (I always love easy) - way to add luxury, richness, and texture to a bathroom. With these drapes it's almost too elegant to actually shower. This example uses panels and a valance on two poles. You'll still need a third for the shower curtain.
In this example, the drapes are hung on partial rods mounted at the ceiling. Again, you would still need a shower rod and curtain to actually use the shower here. Most drapes used this way were able to be pulled all the way across in order to hide the shower curtain when it's actually put up.