I cooked today using this recipe (the OP in this thread) as inspiration, but not following it to the letter. I substituted tomato puree for the whole tomatoes and after the initial frying stage I transferred to a slow cooker for 4 hours on low. The result was great but having used chicken I think I'll try lamb or beef next time as the flavours and long slow cook seem (to me) to better suit a meat with a robust flavour. In fact I think it would be fab with a cheap cut of beef. Also I'm not a big fan of the texture of slow cooked chicken.
But as Jerry has said, it's a fine base recipe which will allow for plenty of variations according to what ingredients might be to hand. I'd like to scale it up to proportions which will suit a whole beef brisket joint as this would make an ideal slow cooker meal which would yield enough portions to keep me happy for nearly a week! ;D