Where to get inspiration for hopeless creative projects

You are staring at a lot of work, you are not sure if it will ever be recognised or understood, but you have to write it. If it isn't written it will stick in your mind like a fishbone for years. You have to get it down but you need reassurance that even the most seemingly worthless project is worth it somehow.

Here are three movies I always go back to that convince me my latest doomed creative project somehow cosmically has to happen, all featuring creative disaster from which nuggets of beauty make them more worthwhile than most of the crap out there. They sound grim, I find them all hilarious and hugely inspirational.

http://en.wikipedia.org/wiki/Dig!
Classic music documentary featuring two feuding indie pop bands that were once great friends. One will make it (briefly) big, the other will fallout apart in hilarious acrimony. Which one will be remembered in posterity?

http://en.wikipedia.org/wiki/24_Hour_Party_People
Infamous Manchester fop Tony Wilson wants to create a record company in which there are no contracts and artists have all the power. It is a disaster on almost every level but gives birth to the UK dance scene.

and of course

http://en.wikipedia.org/wiki/Ed_Wood_(film)
Even the man universally regarded as the worst film director of all time deserves to make his terrible terrible stuff his own way, with his own unique vision.