I think the answer depends on your circumstances. If you are carrying lots of credit card or other forms of debt I say your first priority should be to make progress on that. Call it a private bail-out of the banks if you want. If you are lucky enough to be solvent and you want to spend your money patriotically then I would encourage what might be called “home infrastructure” spending. There are lots of unemployed contractors out there. Get some bids on making your home more energy efficient. It is probably as good a financial investment as you can find these days, and will put some people back to work.
Read other economist’s suggestions at Real Time Economics.
Addendum: For readers who are a bit confused by the headline, $8 refers to the amount of money that will be added to most U.S. workers’ weekly paychecks starting in June, as a result of the recently signed stimulus bill.