Of course "Microsoft knew what it was doing all along". ;-)

Quoted: In the No. 4 spot is the Windows 7 Launch Party instructional video. Microsoft has been relatively savvy when it comes to viral video; this one, however, seems to be of the "so inadvertently bad it's good" ilk that makes it onto the chart from time to time. It's promoting in-house Tupperware-style parties to show off the new operating system, but the cheesy, forced dialogue and awkward phrasing has made it the subject of all sorts of ridicule -- enough that it drove a half-million views. (Who knows, maybe Microsoft knew what it was doing all along.)