The 2001 Tax Cut.

You can see very clearly who benefited the most from President George W. Bush's tax cut.

The 2001 George W. Bush Tax Cut -- Who Benefits

Source: Tax Policy Center
National Tax Journal, March 2002
http://taxpolicycenter.org/taxfacts/tfdb/tftemplate.cfm?docid=220

Note: An August, 2004, study by the Congressional Budget Office showed the richest 1% garnering substantially more monetary benefit -- upwards of $70,000. In other words, the numbers here, believe it or not, are substantially more conservative.