What do I need to add to a graphic portfolio (photography and graphic arts)?

I am looking to put a graphic arts portfolio together in order to land a better job. What is usually included? I have some photography, a political poster I created for an ignment, some typeography, a photoshop project, a indesign book cover, and a couple of illustrator things. What should I add and is there something that I should creat new and put in my portfolio. Thanks any suggestions or websites that might help.