Can anybody point me in the direction of a creamy buttercream recipe?

Here's one:

Two of Everything

2 cups butter
2 Cups Crisco
2 pounds powdered sugar
2 Tablespoons flavoring
2 generous pinches salt

Cream together butter and shortening for 10 minutes. Add about 2 cups of sugar and cream well; continue doing that until all sugar is incorporated. Add flavoring and salt and mix on low speed for 10 minutes.
This is a NON cursting icing that is very creamy.
If you want a crusting b'cream reduce either the Crisco OR the butter by 1/2 to 1 cup until you get the crusting effect you want.
Flavoring can be ANYTHING you like: lemon, vanilla, almond, OR a combination.

Hi-ratio shortening makes a huge difference!

This one is really good.
http://allrecipes.com/Recipe/Buttercream-Icing/Detail.aspx