It only lasted for 2 series,but may i suggest "The Lakes" by Jimmy Mcgovern. Its sooo well written,the cast is amazing and it is also the role that made John Simm first famous.
Every once in a while i will watch the DVD's again and it still holds up soo well to this day
As already mentioned Life on Mars was great,i can't wait for the follow up(ashes to ashes) to hit our screen later this year