Although in Canada we don't usually worry too much about what the U.S. courts are doing, its often useful to find out what's going on. As an academic librarian, I never know what kinds of questions I will get, and when it comes to US law, it can be tricky.
Well, Justia has a free service (you need to sign up for it though), which gives you daily summmaries of cases from all levels of the US court system, including the state courts. It's not perfect, but at least it adds to the open access movement. Check Justia out here.