This blog post has 192 collected advertisements many of which involve some very nice graphic design creations. Here are a couple samples:
OK, you have to see this. Thanks to Layers Magazine for showing it to us. It’s some of the most detailed and incredible digital art you will ever see. And it’s done by a master, Bert Monroy.
He is a pioneer and if you want to be great just have loads of talent and spend thousands [...]
Here are a couple incredible examples of really nice space-theme graphic art. Presumably it also falls under the 3D category, surely some of them are done using 3D rendering software.
Here are some examples by Greg Martin: