The latest update to Pocket Metaverse, the iPhone app* for accessing Second Life that I quite dig, has a great new feature: You can now use it not only to log into SL, but also, to play streaming media that's linked to whatever SL parcel you happen to be standing on. (Pictured at left, me listening to SOMA FM's Secret Agent channel that I stream in my SL office.) The most obvious and appealing use for this function, of course: Listen to a live SL music performance without having to fully log in with the standard client. Imagine the coolness of catching your favorite metaverse artist while riding the train or sitting in the park (provided you have a decent wireless connection.) Read more about it here.
*Formerly called "Touch Life", but re-dubbed Pocket Metaverse to comply with Lindens' policies on third party viewers.