The only flaw in this arguement is that it doesn't really address inflation--that is, his discussion says take your 2007 income and apply it to the 2000 and 2007 tax tables. Doesn't work obviously, because what one earned in 2000 is (hopefully) less than 2007.
However, if one says that they earned 50,000 in 2000, and index that to the rate of inflation, that should come up to about 61,900 if you go by CPI.
Using a married/joint with no kids, and no itemizing (simplicity) with a standard deduction in both years, one comes up with a taxable income of $42,650 in 2000, and $51,200 in 2007. The federal tax paid in 2000 would have been $6397.50 and in 2007 would have been $6897.50--an actual INCREASE of $500 over the last 7 years.
However, that being said, had the Bush tax cuts not gone into effect, the actual tax paid in 2007 (and what will be in 2010) would have been $8636--$1800 more over what you paid in 2007. That comes out to about $40 a week more in federal taxes alone--well above the $13/week "stimulus" most of you are currently seeing.
Hope and change, people--stand by.
Sources:
http://www.moneychimp.com/features/tax_brackets.htm