Quick tip:  if you live in the New York City area, I highly recommend looking into this session on May 12th:

https://tdwichapters.org/Blogs/New-York/2010/04/May-12th-2010-IT-Can-Run-But-IT-Cant-Hide-from-MS-Excel.aspx

It features Bill Baker and Andrew Brust.  I worked with Bill Baker at Microsoft while he ran the Business Intelligence arm of SQL.  Very colorful guy with an illustrious history and a reputation for not pulling punches.

I’ve never met Andrew personally but he was one of the first people I “met” on Twitter, and I quickly came to respect his judgment and observations.  In fact he’s been on my blogroll (in the right sidebar) virtually since the day I launched this blog.

PowerPivot is not explicitly mentioned in the agenda, but I have word that it figures heavily in the discussion.  (I suspect that an explicit mention would make people fear a marketing talk, but neither of these guys is an MS employee so that wouldn’t be warranted really).