We got the good news today and want to share the happiness with friends here. I found a lot of useful information from this forum and appreciate the help from everyone who shares their experiens!
Here's the details: EB1b sponsored by company
PD: 1/2007
I140 approved: 4/2007
Tansfer from TSC to NSC: 8/2007
RFE asking for additional medical evidence: 3/2008
Received approval email:4/30/2008
Good luck everybody!