At USGS you can download Digital Elevation Map data of anywhere in the US. I'm importing this data into Terragen and then using CamPath to render a fly-by movie of Irondequoit Bay.
The last of the 370 frames should be finished rendering in about 8 hours. :) Hey, they only gave me a 266MHz P-II here. Oh well, it'll be something to look forward to coming to work for tomorrow.