Plugins : Download SU Podium

SU Podium uses ray tracing and global illumination to create photo-realistic images. Although the user does not have to be aware of what technology is being used, it's important to note that you can obtain high quality images with realistic reflection and lights, quickly. SU Podium uses multi-threading of your CPU so much of the rendering process will use all your processors (Dual/ Quad/ Eight).
  

SU Podium V2 Introduction Video :

Summary of Features

1. Works inside Google SketchUp 7 or 8, Free or Pro, Mac or Windows
2. Works with SketchUp textures, sky, background colors, shadows, groups and layers
3. Material properties applied globally to SketchUp textures
4. High quality raytracing
5. Advanced Global illumination
6. Physical sky for skies with depth and turbidity
7. Bump mapping
8. 'True' reflection - not fake specularity
9. Refraction with presets
10. Blurred reflection
11. Blurred refraction for true translucency
12. Light emitting materials
13. Omni lights
14. Sun light
15. Sky Light
16. Spot lights in PLS
17. Caustic reflections
18. Unlimited resolution
19. Multi-processor support
20. Free Light Fixture library of 200 ready made lights

How it works

Select a SketchUp texture you want to apply Podium properties too. You can select the texture by selecting the face that the texture is on or you can select the texture directly from the SketchUp Material browser. When you make a texture selection, its name will appear at the top of the Podium Material Property dialog box.

Once a selection is made, apply the various Podium properties to the texture by using the appropriate slider. This will turn the texture into a Podium material.

[Souce : http://www.sketchupmaterialslibrary.com]