Red Milf (Rachel Steele) is the most popular. Also the Taboo Series and "It's A Mommy Thing" Series.
You can get banners and promote these movies for the PPV site hotmovies. You only get paid it you they put up some cash. But you get revenue if they continue to purchase through hotmovies.
They have the Red MILF stuff on hotmovies too.
Sign up and get banners from these movies at movie dollars. You can even create small clips.
http://moviedollars.com/?vod=233079,0