I think this is pretty rare stuff. I know it wasn't on the dvd. Spanish subtitles are included but aren't synchronized with the video. Check out the divx6 site for better quality.
Here's the link: stage6.divx.com/user/diastole/video/1539019/making-of-requiem-for-a-dream
The pier scene, opening scene with Harry and Tyrone dragging the tv, and scene with Sara talking to her friends outside the apartment are included.
Enjoy!