Qutemol using Cedega
Pawel over at Freelancing Science recently highlighted Qutemol, a nice looking molecular viewer that does real-time ambient occlusion rendering. There isn't any official Linux version, but I found that the Windows version runs okay on Linux using Cedega (a version of Wine that has better DirectX support, especially for games). Since Cedega is based on the Open Source Wine code, you can compile your own command line version ... but it's a good idea to buy a maintenance subscription from Transgaming and support it's further development, if you can afford it.
Here's a screenshot of Qutemol running under Cedega on Ubuntu Gutsy Gibbon, just to prove it.
No, it's not Photoshopped ... (or GIMPed) ... :)