I play the piano. I`m not sure what level I`m at, I think about an intermediate level- to give people some idea, I`m working on Bartok`s 6 Rumanian Dances, Haydn`s Sonata #49, and Beethoven`s Pathetique Sonata.
My problem is that my playing seems to have hit one of those annoying plateaus where I`m not going anywhere.
I need some pieces that are harder than what I`m doing now, so that I can extend myself and thus improve, but I have a rather limited knowledge of the piano repertoire. Does anyone have any suggestions for what I could play?

I don`t think I`ve had any of those plateaus, but if I did, I would go to more piano competitions, and see what they play.

U have to listen to more good recordings and go for more concerts. That`ll give u a paradime shift. And u can sttempt doing more Etudes and studies. Chopin Etudes is a good choice. Do more ex. in technics/styles that u think yr weaker in, or alternatively, play pcs that are more fun, shorter, but at the same time technically demanding. That`ll push u to a whole level. U may wanna try Bartok`s Allegro Barbaro, Gershwin Preludes, Chopin`s Berceuse,Lennox Berkeley, Chopin`s etude..maybe some fun etudes like the aeolian harp, butterfly.... Talk to yr teacher regarding this. She`ll better understand u and able to cater to yr needs.

I don`t have a piano teacher, I taught myself to play. The concerts are a good idea- I`m going to be getting into free concerts at university for the next 4 years, so I`ll have plenty of opportunities to see performances.
I just got a new piano, and the fact of having a good instrument has already made a huge difference to the quality of my playing. I also just started work on Chopin`s Bb minor Nocturne, which is not too bad apart from the horrible cross-rhythms.