Chopin's waltzs are very fun and work Farly well on the guitar. You have to be a little bit liberal with the transcriptions (he drops down octaves which the guitar can't do), but i like playing them a lot. petite waltz is my favorite, because the bass and accompaniment is fun just to play on its own, and it lends itself to being funky (works with blues notes).
in fact with two guitars (one play bass and chords and other melody) you can pretty much play them note for note.
there my favorite classical scores to play, now that my choral book is lost (never let people borrow your things its just a bad idea)
chopins opus 18 no. 1 is really fun to play on the guitar. I youtubed it and the one guy i found doing it wasnt doing it as half as interesting as i used to. Im ganna try to relearn in and mabye make a video of it. It a comlplicated piece so it'll be a while