Yeah, Grooveshark is all.....wonky in XBMC - which is a shame. I stick to Pandora and now Radiotime which I just added today. Also, Muze is cool for music videos - the playlists are great in Muzu TV; it's like MTV back in the day but with music you like and no commercials. And I like Icefilms ok, but it's my 3rd choice if I can't find what I am looking for in Navi-X or FastpassTV. I don't like not being able to ff/rew in Icefilms or dealing with that 230mb download for artwork that never seems finsih or install correctly (that could just be my issue though). Navi-X is my favorite since it has artwork, descriptions and you can ff/rew. Navi-X is a bit disorganized and the searches don't always work for be but otherwise it's awesome.