This is a short overview over other people doing daily or periodic photo projects.
There is a myriad of such projects on the internet (there's even a flickr group dedicated to that), but I find most projects to be pretty ambiguous. Some just seem to take random pictures everyday, others (most, I think) take more or less the exact same picture, with the same facial expression, the same light, the same angle etc. While this is the most able setup to document how you change over the years, I find it to be pretty boring to look at after a while. Sure, you can make a movie that is entertaining to watch for a while, but looking at the single pictures is just bleak.
Anyway, that's why I list only a few selected projects here, which I find noteable in one way or another.
Has his project going on since 1998. That alone is noteworthy, but it is here because stumbling over it again finally gave me the intiative to start my project (even if it took some months to actually get going).
I like his project a lot. Even if the expression never changes, it's at least a smile, and he takes a lot of background into the pictures. He actually does some 'motto weeks' every now and then. It's fun to look at.
Takes a picture of him in his surrounding at 09.09 AM every day, and writes a little about it. This is actually pretty close to what I do, but I have only found his site half a year after I started.
This is not a daily photo project, but a yearly one. And impressive at that, since it's been going on since 1976. Diego takes a picture of each of his family members on June 17th every year.
I think everybody knows that one. While I find the photos themselves not too interesting, I think his project is most known, because of its impact on youtube (and the distinct, nice music in the background). The video ignited a boatload of spoofs, like the Homer version