Reallusion, makers of iClone have launched "Bring Your Architecture to Life SketchUp & iClone Rendering Contest." With a combination of realistic materials, detailed landscape entourage objects, spiffy lighting effects and full-fledges animation, iClone is a really nice way to present your models.
If you use SketchUp on a Windows computer, you should definitely give iClone a whirl. The material incentives for entering this competition are substantial; An iPad, a Sony Cyber-shot digicam, SketchUp Pro 8 and plenty of other goodies await the winners.
The deadline for entering is midnight on December 15th, 2010.