Twitter pal and"Believe in Film" founder Gordon asked if I would write a short feature on shooting long exposures on film at BelieveinFilm.com. You can see the results here. The short version is that I use medium and large format film (almost always Fuji Neopan Acros 100 or Fuji Provia 100) to shoot my long exposures and it's not as hard as it looks.
Here is a bonus long exposure using a Toyo 45A 4x5 camera with swing movement applied to blur the buildings a bit. Shot on Fuji Neopan Acros 100 of course.