You mentioned "I also got iwork (good idea?) and mobile me." I have been using MS Office (PC) ever since and including Office 4.1 (pre office 95) at work and here at home. I also have to help others when they have questions/problems with Office. When I bought my MBP (late 2006) I started using iWork along with Office 2004 for Mac. With my new iMac I'm only using iWork '09. If your into all of the power user (advanced) functions of MS word then Pages may not live up to your expectations however, the vast majority of users don't use. Pages is an excellent word processor. I have 2 friends at work who just bought their first Macs, iMac 21.5" core 2 duo. They love iWork '09 even though they have been using MS Office for many years. They also find Numbers to be easier to use than Excel. Keynote is better than PowerPoint and that is not just my opinion.
I love MobileMe. It keeps everything synced, my iPhone, MBP and iMac. And, I can access my MobileMe account from my PC at work.
Have fun with your new iMac🙂. I'm having a blast with mine.