...they should have more episodes that deal with Sheldon. Like Sheldon going to the beach. They should also do an episode where he appears on Jeopardy and talks with Alex Trebek or at least have Alex play a professor and have Sheldon make an inside joke that goes something along the lines of: "Oh please! Your not smart enough to appear on a quiz show."

I think the funny dialogue from each of the above scenarios just write themselves.