Google says they take submissions, but they cant guarantee that all submissions will be accepted.

They do however, offer a few guidelines for video producers to follow if they want to be considered for inclusion.Submitters need to add the youtube attribute to their data feed, and include the YouTube video ID for each product with a related YouTube video review. The IDs are the values that follow the v in the YouTube URL of the video. Also include UPC, ISBN, brand, and MPN information in the tag of your YouTube video review.