Hey, just joined up meself to respond.
Neutral Milk Hotel songs:
King of Carrot Flowers (Part 1), In The Aeroplane Over The Sea, Oh Comely, Wood Guitar
Also, if you haven't heard Elliott Smith yet, let me spoil you:
King's Crossing, Pictures Of Me, Fond Farewell, Speed Trials, Don't Go Down
If you liked Arcade Fire, check out Wolf Parade:
You Are A Runner And I Am My Father's Son, Dear Sons And Daughters Of Hungry Ghosts, Grounds For Divorce
And three suggestions of me own: Final Fantasy, Ninja High School, and Why?
FF:
None Of You Will Ever See A Penny, Took You Two Years To Win My Heart
Ninja High School:
Jam Band Death Cult, By Purpose Not By Plan, It's All Right To Fight, Invasion Party
Why?
Gemini (Birthday Song), Sanddollars, Rubber Traits