this collage is made from 4 photos chosen from 1968 photos shot about a month ago. photos were taken from our apartment window in a 15 hour period every 20 seconds resulting 1968 photos in total. i included videos as well in case you were interested:

high quality (4.7MB - recommended)
medium quality (2MB)

for similar entries, go to archives page and look under video attached category.
problems viewing the videos? you might need quicktime 6 plugin, which is free and you can get it here.
for further technical info of how this is done, check out this page.