March 29th 1999: It looks like the mechanism for asynchronous incremental download of rasters by URL, first published in ivtools-0.7.4, has disabled the slideshow mechanism described below. To use this, either revert to an earlier versions of ivtools, or upgrade to a newer version whenever available. Sorry for the inconvenience.
This link points to a slideshow of images from the Apostle Islands National Lakeshore on Lake Superior (images from the US National Park Service). It will launch as a continuously looping slideshow in ivtools flipbook if you've installed ivtools-0.7.2 or greater, and add the following to your ~/.mailcap file:
application/frame-idraw; flipbook %s
It will also work to download the above file, and manually launch flipbook with this command line:
flipbook apisles.frs
This is a different use of the hyper-graphics mechanism of ivtools.
for people with faster links:
Here is another slideshow sample, a collection of images from the Hubble space satellite (NASA/JPL/CalTech).