Google Earth Sectional Overlays
Federal Aviation Administration
Federal Aviation Administration
This is useful for flight planning or checking out what the landmarks/obstructions/airports look like.
It's pretty simple:
1) Download and unzip the TIFF file and save it.
2) Start Google Earth and open the file just saved. Google Earth will create a super-overlay so it can display the whole chart at resolution. You can then save it in Google Earth so its always there, ready to use.
Google Earth can be downloaded here.