Here is the info from youtubeshuffle.com:
YouTubeShuffle will generate a list of YouTube videos related to your search term and play them back to back for your lazy ass enjoyment! Updates coming including: Scrub bar... Search by author... List filters for average rating, view count, length, sorting and more! Users with YouTube accounts will be able to generate a list containing all of their favorite videos(!) Also on its way, the FARK video page list.... oh yeah.. that'll kick arse.