Here is something little I did with a great free program called "OpenFX" it is one of the best, it took me like 2 days to get used to it though, so here it is. http://www.zippyvideos.com/9634308214553766/cool/ it's with a helicopter, I am releasing a trailer to a movie that will be like a minute long later.-CP
Get the blades spinning, put a texture to it and an ocean background and rerender the scene and i'd say it should look pretty cool