I like this one on my desktop, the windows open like they are part of the scene. This image holds the record for crashing my computer, the mushrooms had a few too many polygons.

A magical ring of stones, can you think of a better way to travel?

For those of you wondering how the waves were done, they are a large bumpy terrain, with an ocean texture applied.

Happy Halloween! The pumpkin is a sphere multi-replicated in a circle, then stretched vertically in Bryce. Negative Boolean objects were used to 'cut' the openings.