What the Falcon originally looked like
Here's a pretty awesome early concept design of what was to be become the Millennium Falcon.
Obviously it's the work of the great Ralph McQuarrie - it would have been amazing to spend a day in his mind. It's been famously suggested the ships original design was inspired by Lucas seeing a burger with a ]n olive tagged on to it but we doubt it very much.
If you're wondering where you may have seen this before, check out this:
Gosh, let's hope the Falcon turns up in Episode 7....