I've been playing with Blender on and off for a couple of years now, and have only recently become confident enough to use it for showing things to other people. I've found it's an amazingly useful tool to have around, if only for the amount of design work I get asked to do. Recently, I used it to create a pretty swish rocket ship logo, which was eventually scrapped because it was too similar to something a competitor used. (As a side-note, I often wonder if our competitor's rocket was also created as a result of an over-indulgence in Tintin. I guess we'll never know).
Here's the first things I've posted over on Blender's community website elysiun. It's part of a series I've been working on, rendering NES characters in 3D pixels (click for the hi-res version)