It has been replaced by two much smaller dishes.

Hughes net dish for satellite Internet and dish for Direct TV

That's a tough one.

Find a ham radio operator. They might want it for super-high frequency stuff....

I agree with BenwinM ! Being a Ham, they would love something like that if they work satellites or Earth-Moon-Earth!

Cover in vinyl and use as a base for a fountain

sell for scrapmetal?

cover in reflective foil for a solar cooker for EVERYBODY!

If you can't find a ham radio operator, turn it into a birdbath.

a webcomic artist friend of mine told of her brothers welding one into a gazebo/canopy for their sister's wedding