A note regarding the Calibre software that was hit on above:

A problem I found when using either the Kindle eReader app or the Nook eReader app on my tablet was that they are both fine for reading eBooks, but terrible for organizing/finding them if you have a large-ish collection. The Nook app is a bit better than the Kindle app because the Nook has a concept of "Shelves". However, that is a nightmare to maintain for a large selection of eBooks.

"Calibre Companion" to the rescue. I just found out about this app. There'a a demo version for free (limited to handling only 20 eBooks) and the real version is $3.99.

Calibre Companion gives you the ability to organize/find eBooks locally stored on your tablet. The power of the main Calibre server, but available on your tablet client. Calibre Companion also provides some really slick interfaces to your main Calibre server.