The Sisters of Charity have posted an interactive graphic containing images of what we throw away. It depends. If you visit their site and roll your mouse over the graphic you can see how long if recycled or if not recycled.

Sources:
Rethink Your Waste 
Earth Institute, Columbia University 
Environmental Protection Agency 
Polystyrene Packaging Council 
Preserve 
PVC Recycling Technologies 
Sony 
Stanley 
University of California, Davis