Did it spur the economy as advertised?
Well it's only been in effect (since the extension) for about 90 days but If the past is any inidication I wouldn't expect much:
http://www.politifact.com/truth-o-meter/statements/2010/jan/25/carolyn-maloney/congresswoman-says-democratic-presidents-create-mo/Before we provide the final totals, let's run down how each president did. Here are the average annual percentage increases in jobs for each postwar president:
Harry S. Truman (Democrat): increase of 2.95 percent a year
Dwight D. Eisenhower (Republican): increase of 0.50 percent a year
John F. Kennedy (Democrat): increase of 2.03 percent a year
Lyndon B. Johnson (Democrat): increase of 3.88 percent a year
Richard M. Nixon (Republican): increase of 2.16 percent a year
Gerald R. Ford (Republican): increase of 0.86 percent a year
Jimmy Carter (Democrat): increase of 3.45 percent a year
Ronald Reagan (Republican): increase of 2.46 percent a year
George H.W. Bush (Republican): increase of 0.40 percent a year
Bill Clinton (Democrat): increase of 2.86 percent a year
George W. Bush (Republican): increase of 0.01 percent a year
Barack Obama (Democrat): decrease of 3.0 percent a year