As white I play 1. d4. If black plays 1... Nf6 I very much enjoy the Four Pawns Attack. Against 1... d5, I play the Queen's Gambit.
As black I just play 1... b6 against pretty much everything, and then I kind of improvise. White usually isn't accustomed to this kind of opening and rarely gets a good attack, so this usually gets me to a solid position for the mid game.
As for 1... b6, you should learn about Owen's Defense (1. e4 b6). Also, look at some of my games using 1... b6 against any of white's first moves (especially look at my games with 20/0 time; I make a lot of mistakes in faster games)
Just wondering what everyones favorite openings are want to try a few different styles out