1. Freeware 3D Tools

When ncorporating 3D effects in your design, it is often a good idea to first create a scene in a real 3D rendering tool and then importing into a paint program. That way, the lighting will always be more realistic than when trying to do the lighting manually. Also having the perspective correct will be much easier.
Here is a good list of freeware 3D programs : The Best Freeware For 3D Of 2008.

2. 16 Sensational Poster Designs

For your inspiration. Poster designs with a lot of manual and sketchy parts, at You the Developer.

3. Typography gems

This list at Smashing Magazine shows some amazing typographical experiments.

Also stumbled upon Alex Trochut. Check it out, it’s awesome.

4. Digital art with 3D

I really like these two examples of digital art combined with 3D.

5. List 20 Inspirational Logo Designs at Designerside

Looking at other logo’s is a very good way of getting inspiration for logo design. This list composed by Designerside shows some very effective and beautiful examples.