I would love to have Smart lists with check off ability.
For instance, a grocery list where you could be in the store and ask the r1, " what do I have on my grocery list from the produce section?".
After you grabbed the items, " check off all produce items from grocery list". Of course it would also be nice to be able to use the scroll wheel to manually check off items.
Other possibilities… " The store I am at is out of tofu, what are the nearest stores that stock organic tofu?".