I don't know how "unusual" but I do a few things that probably not too many do...
Use the Korg ielectribe app to make music loops, and then import them into my desktop workstation
Use Universalis (Catholic) for devotion/prayer
And though not all that unusual I have to add to athlonkmf's word about dropbox. I absolutely am nuts about Goodreader for viewing and Documents to Go for editing MS Office docs. Both of those coupled with Dropbox is just a wonderful thing
