DrugList is an Android application for scheduling drug prescriptions. The prescription names are entered into a database, along with the time they are taken. When you exit that activity with the "Save and Exit" button, the time and date for the next medication to be taken is computed, and a system alarm is set. When that alarm fires, you see a ListView with only the drugs due at that time.
Packrat is a media collection manager application for Android. You can use it to add books, CDs, games, movies, etc. to your collection by scanning their barcodes and organizing them onto shelves. You can let Packrat organize your items into smart shelves, or manually stack items onto shelves of your own creation. You can also track items you don't have yet on a "wishlist" shelf.