Thanks to Dick Eastman's post for this information.
The Allen County Public Library has recently released two videos on YouTube on using the Genealogy Center and some of their resources.
Part One: http://youtube.com/watch?v=tcqDqc0SXgo covers how to use their digital collection and online catalog. It runs for 9 minutes 17 seconds.
Part Two: http://youtube.com/watch?v=mlYhUwu8waQ runs for 7 minutes 30 seconds and covers the local history reading room, the microtext reading room, the family history room, as well as the movable stacks which house the city/county directories and oversize books. Other information helpful for planning a research trip to the center is also included.
Check out both videos, especially if you are planning a visit or even if you are simply curious about their collection.