If you are looking for an “office suite” application for the Nook Color, Quickoffice Pro is currently your best bet. The app must be purchased from the B&N App shop as the Android Market is currently not available for the Nook Color.
Along with the ability to save documents in Microsoft Word, Excel, Powerpoint, and view Adobe PDF documents, the app also permits syncing with Dropbox. This is a “must have” for any modern mobile user. The screenshots above show App shop purchase and icon, and instructions on how to setup your Dropbox account to sync with Quickoffice Pro.
Verdict: If you need a well-behaved office application, get Quickoffice Pro on the App shop.
Disclaimer: I am not associated or employed by any company producing software reviewed on this site.