TED's free iPad app has offered up quality videos and audio of the conference's famous guest speakers for a while, but the company recently updated the app to be universal. Now even while out and about on your iPhone, you can access some of the knowledge and wisdom being shared within the TED app.
There's a new feature called TEDradio, too, which offers one-touch access to a continuous stream of TED talks. Just like the iPad version, you can either watch videos online or download them to watch offline (if, for example, you're headed for a long plane trip or something like that). There's even a feature called "Inspire Me" where you can set certain criteria for a talk (like the amount of time you've got or various subjects
