He ended the reign of Saddam Hussein, donated a substantial amount of money to Africa, Sufficiently cut taxes, and kept us safe from any terrorist attacks post 9/11, which was master planned during President Clinton's reign.
He played a role in the No Child Left Behind act and started the War on Terror. There are others to list, but it kind of depends on your political viewpoint.
George Bush, whether you like him or not, successfully fended off any other successful terrorist attacks or attack attempts during his presidency and according to many was instrumental in finding...
Killing hundreds of thousands of innocent people in Iraq and Afghanistan, sending thousands of US troops to there deaths, making money out of it all through his companies and finally getting away...