Why are so many Jays fans so hard on Overbay? It's only been two weeks, so I suggest you give him time. Besides, he's an average hitting first baseman with good defense, and he makes less than $10 mil a year. You're getting him at a good price. He's not a superstar, never was, never will be, but he's a reliable player with an affordable contract.
As for the Cy Young race, it's not just between Timmy and Roy. Santana is one of the best in the business himself, and Haren is a top five pitcher in the league. It's going to be close, though I'd say it'll go to Roy or Timmy. Just don't count out either Haren or Santana.
Heck, there's even guys like Ubaldo, J. Johnson, and Gallardo who could surprise. Who knows, but the NL is certainly stacked with talented pitchers.