Superman actor Christopher Reeve has blasted American President George W Bush for failing to increase federal spending on embryonic stem cell research. Reeve, who is paralyzed from the neck down following a horse-riding accident in 1995, told 625 graduates at Middlebury University in Vermont, America that Dubya's "inaction is unacceptable". During his Sunday speech, the 51-year-old said, "As president he has a responsibility to the greatest good for the greatest number of people."