I've already got several AnCo and Grizzly Bear songs linked in pages ~10-13. Go through those, but here's some more highlights.
I've already shown you the AnCo song "Guy's Eyes." That's a good start.
Be sure to view this in full screen mode.
Same song, different video. Again, try it on full-screen mode. Trippy stuff, especially if you've got a large monitor!
Helps to appreciate the song I think.
Some of their earlier stuff featured a lot of acoustic pieces. Kinda weird, but in an amusing and interesting way. If you don't like weird stuff, this probably isn't for you. But very creative I think!
Onto Grizzly Bear, this was the first song that caught my attention. Even my 70-something y.o. mother thought this was an interesting song.
I find this song to be exceptionally well-written. Great transitions between the soft and loud parts.
There's an Animal Collective thread in the "Avant Garde & Experimental" section and a while ago I started a Grizzly Bear thread in the "Indie & Alternative" section. Lots more stuff there.