I have a pregnancy calendar at BabyZone.com that I love! It shows the month in a grid like a normal calendar except that each square tells you how far you've come and how many days are left and links to a new article about pregnancy. Even though its progress is fairly predictable I keep coming back to it to see the little pink marker move to the next box in the calendar.
Today my calendar tells me I've entered my 11th week, I've completed 72 days, and I have 208 days to go. To me, in my pregnant state, this is fascinating. Tomorrow I'll check back on my calendar and it will say 73 days, 207 days to go, and I will be just as amazed.