Can anyone recommend any good rap songs? im getting tired of what i already have on my ipod =p?

okay, so i like ALL kinds of music, but lately i've been listening to alot more rap and hip hop and r&b, and i just bought some more songs yesterday, but im already getting bored of them. i like alot of old OLD hip hop (slick rick, doug e. fresh and the get fresh crew, run dmc, biggie, tupac...i think you get the idea) and i like stuff like erykah badu, and drake, and of course nicki minaj, and lil wayne, and rick ross too, but i think i need some more things to listen to...preferably by female rappers, but any other suggestions are cool too tho =)