How do I get sine waves from this simple circuit?

Hey guys! Im new using Simulink. I was trying to simulate a circuit with an AC voltage source but the graph I get isn't anywhere near a sine wave. What do I need to put to the model to make it work??

Model: http://i1226.photobucket.com/albums/...mulinkpic1.jpg

Graph I get:

http://i1226.photobucket.com/albums/...mulinkpic3.jpg