From ESPN chat with Keith Law, a former Toronto front office guy.
"Brian (Bay Area): What do you think of Tim Linncecum?
Keith Law: Potential ace reliever. Love his durability. Not sure he can go through a lineup twice; hitters will lay off that curve, and Lincecum can't throw it for strikes. He has one of the weirdest (and most entertaining) deliveries I've ever seen - it's like a trebuchet."
I love baseball, but I'll defer to those who played past high school, isn't it possible to improve your command? Can't TtE learn to throw his curve for strikes? Of course, I don't consider Law's opinions to be gospel, but it seems a little short sighted.