I had blogged about MIX 07 last year. The event had siginifcant importance and the wonderful announcement of Silverlight which changed the way web programming and user experience is being talked about these days.
Now, here is MIX 08 happening this year, March 5 - 8th at the Venetian Hotel, Las Vegas. I dont think the address requies more details, though 
MIX 08 hosts Steve Ballmer Keynote, Scott Guthrie presenting on the new Silverlight release and few more exciting announcements. To check agenda visit http://visitmix.com/2008/agenda.aspx
To get a special discounted registration visit http://visitmix.com/2008/registration.aspx and hurry up, you get this discount until Jan 31, 2008.
This event promises to have flood of information as well as opportunity for networking, partnerships as well as loads of fun, and do I need to say that since its happening at Las Vegas.
Cheers !!!