Sufjan Stevens

From the twinkling intervals of the first six notes, then the breathless, rollicking drive (that pushed "Little Miss Sunshine" through its voyage), the song begins as a celebration of freedom ("I drove to New York / In a van with my friends / We slept in parking lots / I don't mind, I don't mind / I was in love with the place"), which makes a perfectly fine road-trip and soundtrack song. But as the song begins to reflect on itself, we hear about the double-edged sword of nomadic existence, and that's where Stevens makes a song of the decade. - Treeswingers