DiskyT - Youtube playlists done right
Undrtone - Social layer on top of Spotify and Rdio from Scott Vener
OrganizeTube - Create video playlists from Youtube, Vimeo and other sources
PlaylistMap - Connect with Spotify playlist curators from around the world
Tuned Rocks📺 - Discover🔎 curated Youtube videos 24/7
BeatSense - Discover great music hand-picked by real people, in a single click. FREE and in real-time!