The BP oil spill was a great source of inspiration for many designers around the globe, especially after GreenPeace announced their BP logo redesign competition. While the majority of submissions are outright lousy, some hidden gems would be serious candidates for a professional-looking corporate logo.

Oil Fountain

Beyond Pollution

Oops!

Oil Nuke

Stain

Not so Green

Oil Hazard

Degradation

Yes We Can (do massive damage too)!

Slippery

Bonus

Check out my own over at 158kilopixels.