Most novice programmers seldom see the necessity of drawing a flowchart - Rodney Zaks - Programming the Z80
So far they have sold 5.07 million PSPs themselves with 2.33 million units sold in Japan and Asia and 2.74 million in the US and Canada. They have also sold 11.2 million copies of the 48 games available for the handheld console, selling 7.3 million in North America and 3.9 million in Japan and Asia. Sony says that there will be 150 titles on the shelves by the beginning of April 2006.
As far as films go the proprietary UMD format that the PSP uses has done well in North America, though not so well in the company's native Japan, where only 400,000 UMD movies have been sold as opposed to 4.3 million units in North America - though that's actually 3.3 million units if you don't include the copies of Spider Man 2 that shipped with the first batch of PSPs sold in America.
Meanwhile those of us in Blighty will have to wait until September 1st to get our PSPs without being sued by Sony. ยต