All that rivalry between Google and Microsoft is just business, of course, and so is the arrangement for DoubleClick to provide video ads across Microsoft’s Silverlight 2 video player.

DoubleClick’s partnership with NBC Universal probably made for a nice wedge, though.

Ads will be served alongside 2,500 hours of NBC’s Olympic coverage played within Silverlight 2, served up by DoubleClick’s In-Stream technology. In-Stream adds Silverlight 2 to already-supported formats like Flash, Real Player, and Windows Media