Happy: Anything really, my Zune is always on shuffle, with one of the playlists I have titled "A Little of Everything" which contains over 4000 songs. And stuff from all genres except Rap, Hip-hop, and R&B.

Sad: I Disappear by Metallica, or Unforgiven I, II, and III. I Stand Alone by Godsmack also.

Mad: Cradle of Filth, Amon Amarth, Dragonlord, Eluveitie, Godsmack, Disturbed, Rammstein(mostly Du Haste), All That Remains, Avenged Sevenfold

Bummed out: Anything really. But mostly: Great Big Sea, Rawlins Cross(if you dont know who they are, look up "Where Would I Be", its very nicely upbeat...and lovey dovey :ninja:), Big Bad Voodoo Daddy(or any other Jazz/Big Band).