maya flying saucer - SaucerHillUFO_MAX8.zip by MDK Graphics

Highly detailed flying saucer.
Model has 68 parts all of which can be textured separately including a plate in the lower thruster port that can be texture animated for interesting thruster effects.
There are detailed superstructures under the saucer domes.
The landing gear can be removed and the bay doors closed for saucer flight with a little tweaking in your 3D application.

Model is untextured, the textured samples were done very quickly in Bryce 6

NOTE: I've seen people use this model in TV commercials and it looks fantastic on screen.