Wright Brothers EX Vin Fiz airplane. I modelled this for the SIGGRAPH 2007 Modo Community Project started by Jeff Rutan and the San Diego Modo Users Group.

It's pretty dense and I'd do it completely differently today but it was a fun project.

(Note: currently the asset sharing site doesn't support scene sharing so all of the mesh is in one layer and will have to be split out to animate the props etc.)