You can disagree with his politics, You can question some of the alleged antics in his personal life, but he has been a significant figure in Scottish politics for quite sometime.
As I overheard one Granny say to her purple rinsed friend on the train tonight -
"If it wisnae for Tommy Sheridan we'd still have yon Poll Tax".
Not quite true but he did become a prominent figure then and went to Jail for it. Maybe he just likes porridge