sufjan stevens (a must for people who love hippy folky stuff)

I have to second this. Sufjan Stevens is an amazing musician. His first album, A Sun Came, is a really fun and interesting listen but I'd recommend Seven Swans for anyone looking for solid, gentle, relaxing, and completely cohesive songwriting.
 
he's either hit or miss.
his most recent album is really great. it's sort of a mix between his early eletronic stuff and all of his folky/indie stuff. which is refreshing.
 
i fell in love with the illinoise album... i liked how funky and danc-y to-y it was. started listening to him when i was a bit younger and had a crush on him when i saw a live video of him with his monarch wings on, and then i got my own wings haha