Microsoft Tech·Ed is our premier worldwide technical education conference for IT professionals and Developers. It's held annually in Australia, Brazil, China, Europe, Hong Kong, Israel, Japan, New Zealand, North America, South Africa, Southeast Asia and Taiwan, and it is chock full of Microsoft product and technology goodness.
If you can't make it to one of these events, there's also Tech·Ed Online. These are brief 10-20 minute technical talk videos featuring product, technology and subject matter experts. I recently presented one on Exchange Server 2007 SP1 with my colleague, Andrew Ehrensing, where we chatted about migration, transitions, and virtualization.
You can find other tech talk videos at the Portal page and the Library page.