Ah, Les Mis, always a good musical. If you want familiar songs, I'd suggest "I Dreamed a Dream", "Red and Black" "Do You Hear the People Sing?" "On My Own" and "One Day More." If you want lesser well known songs, I'd suggest "Valjean's Soliloquy" and "At The End of the Day." The finale is also very good, even thought it's not technically a song but, well, a finale. There are so many good songs it's hard to decide, really!
~Will you join in our crusade? Who will be strong and stand with me? Somewhere beyond the barricade is there a world you long to see?
~Close your eyes, start a journey through a strange new world, leave all thoughts of the world you knew before...close your eyes and let music set you free! Only then can you belong to me...