We took a little different tact this year with Spencer's birthday - he got to invite three friends to do whatever Spencer wanted. We ended up deciding just to host everyone and do pizza and playtime at our house. The kids started off on the Wii, then did pizza and cake, and ended up breaking out Rockband in the end.
We invited our neighbor Jack to spend the night with Spencer, and the two stayed up late trying their hand at Lego Star Wars on the Xbox. Amy was successful getting them to bed by 10pm (of course I was out back with my neighbor lighting up an Ashton).