A quick look at J. Scott Campbell's work on some superheroes, again via his Deviant Art Gallery. He certainly brings the classical comic overstyling to superheroes, accentuating lines, muscles, beauty and dynamic grace. We could easily say that the characters are a little over-posed, but they still carry a tense beauty that works for superheroes, everyone looks strong, confident and capable while retaining his distinctive look.
[Superhero imagery by J. Scott Campbell via his DeviantArt profile]
Here are a few more from about the place - doing a Google image search reveals plenty of JSC inspiration.
[J. Scott Campbell comic images]