Challenging Myself

Ok, I've been playing piano for about a year and a half (self taught) and I've played alot of basic songs and I guess you could call them intermediate songs... But I need something that might really challenge me (not to difficult to the point I want to cry) but something that make me sit in front of the piano for hours practicing... I'm open to any style of music and any composers so if you can, please help
Thanks!

Check of Jytte's website (Here). It's very organized, pieces are rated and there are plenty of information about the composers and the music.

Hope you're still practicing and challenging yourself.

It would be nice if you could send a video recording of yours, so that I can see how you play. That way I could try to find out what are your weaknesses and strengths, and find an appropriate challenge for you