I reckon bitcoin could be used by the media, newspapers and magazines especially, for micro payments on their websites.
The smallest amount you can currently send is 0.00005465btc or something, which is worth virtually nothing, but imagine you ran The Guardian and brought in a bitcoin paywall and charged 1 satoshi per article. Deposit the minimum with them and that is 5465 articles. Seems like nothing, and certainly to the reader it is nothing, but to the newspaper it would soon add up.