Many people have pointed to this interesting visualization in the New York Times which shows data describing movie hits (and misses) over a long time period. Neoformix also has a nice composition which stitches the entire line of data together to form a complete picture. But there are some question marks against this type of view. Take a look at the sample below.
The problem - to me - is that absolute height has weight here. So it looks like National Treasure: Book of Secrets is really, really important. National Treasure's first two weekends brought in $45MM and $65MM ($110MM) where as I Am Legend brought in $77MM and $33MM ($110MM). This problem, however, is something of a have-cake-and-eat-it issue. The graphic is primarily intended to show the aggregate view of the entire space. It then uses in situ mechanism to allow the user to browse down to the details (thus making comparison hard, but achieving the overall goal).