At the time of the "stimulus" package's passage, unemployment was at 8.1%. It is now at 9.5%. Unless there has been an outbreak of some incredibly virulent and deadly disease that only affects employed people, that graph is mistaken.
How much stimulus spending hit the economy the day the package was signed? How about a week later?
In addition, some jobs were created later (albeit not nearly enough) to offset the smaller number of jobs lost montly in late spring and summer. Certainly nothing like the massive monthly losses seen under the final months of George Bush's term and the time preceding the stimulus bill taking effect.
How many jobs have been lost since March 2009? How does it compare to 8 million?