Check it. Whether you do it for the Civic Responsibility or you just need the funds, the Census Bureau is hiring temp workers for the 2010 census. Pay depends on the region you live in, but the pay is pretty good for the level of effort and skill needed to do the job. In my area, for example, they are paying $14/hr; other areas are higher or lower based on cost of living. The hours are flexible, and you would proabably work in the evenings and weekends. Positions are supposed to last between 5 and 10 weeks. I am signing up in my area as I want to do my part to make sure we get everything we can from the government for schools, services, etc. San Antonio is a fairly poor city, and we can use every dollar we can get.
Also, the GF and I are going on a trip to Spain and Italy next year, so the money I make from this will pay for most of it, but remember, you're doing this for your country.