If you know what any of the above means, you might have really enjoyed last week's MCP Q&A with Infrastructure MCA Scott Andersen. Scott gave a short talk on E2007 and then spent the rest of his time answering questions and being a fun and casual presenter, it was a really good meeting. You can still register for his 2nd session (Wednesday, Feb 28) from the MCP site.
Just for the record, I do know what AD, SP1, GUI, and Ex are, plus some of the other words like "default," "correct," and "the." (Now do I sound too defensive?)