He's done some excellent work down the years Mike. He's a very unassuming chap and about as far away as you can get from acting like a 'Hollywood' star, even though he can more than hold his own with them.
His work with Shane Meadows is superb, and he always tends to go for very different roles (compare his work in Dead Man's Shoes to Le Donk for instance) and he also proved himself to be rather deft behind the camera with Tyrannosaur (also mentioned in this thread) which for a first time director was one hell of a debut. The only thing I've seen him in that I didn't like was the movie Backwoods with Gary Oldman. I think they can both try and forget that one.
His band Riding the Low aren't too shabby either.
**EDIT** also, not sure if you're a Stones fan Mike, but he played Frank Thorogood in a movie called Stoned (about Brian Jones death).