This is a genre that I really like, long, droney, moody, with builds, dreamy, awesome on headphones while laying in bed type of stuff. Try it, you will see...
Mogwai is one those bands:
I own Rock Action and Young Team. Both very nice. Here is a video of theirs.
Fuck Buttons is one of those bands: Yes sir, patience is a virtue.
Explosions in the Sky is also one of those bands: I own: Those Who Tell the Truth...
Video is done by some kid.
There a so many more of these kinds of bands. Go to you itunes and get sappy with them.