Viigo keeps on improving their lineup with Project Tango. The latest addition is live NFL scores to their sports lineup. Its nice and simple and a great addition to the rest of the sports coverage they have available. I especially like their Olympics coverage.
If you have not checked it out already you can pick up the application free at www.getviigo.com/beta
On a side note this latest beta of Project Tango really seems to have improved the memory issues. I have had it running for two days already and am only down 500Kb in available free space. Still not completely fixed but a definite improvement!