Spendi knows Dennis Potter but most folks over here don't. He did a bunch of mini-series for Brit TV (Pennies from Heaven, The Singing Detective, Lipstick on Your Collar to name three) and to my taste he's the most original and exciting TV writer, period. Though most folks in north america aren't familiar with him, he's been very influential here too. David Milch (Hill Street Blues, Deadwood) has acknowledged Potter's broad influence, the Coen Brothers borrowed liberally from him in The Big Lebowski, and Woody Allen did an outright theft in one of his movies.
The piece I'm linking here is essentially the finale of Lipstick On Your Collar (the entire mini-series is six hours long). At the very end, when the screen goes black, you'll see some little circles with scenes in them floating about. Click on any one and you'll get another scene. You'll notice too a very young Ewan MacGregor. He got pulled out of drama school to do this project, a decision I expect he doesn't regret.
http://youtube.com/watch?v=Hm2qXT5JcQA