Hi Eric,
Me too. This is what I have found:
Hardware - I have used an external USB hard drive to copy files and folders.
Office Files - I am using office for Mac so the word, excel and powerpoint files simply transfer. Copy them onto the external hard drive from the old machine and paste them into your chosen folder on the new one.
Email - I had 150 folders with up to thousands of mails in each one. For about US$10.00 I bought O2M (
Little Machines) and it did the business. Install it on the old machine and convert outlook to Entourage with O2M.
iTunes - copy the iTunes folder (normally under My Music) from the old machine to the portable hard drive, go onto the new machine, delete iTunes folder and paste the copied one.
Calendar - Using the file from O2M transfer the calendar into iCal. This will either be called "work" or "home". Sync Entourage and iCal (see other threads for this). However, at this point your calendar is not yet in Entourage. To do so export the "work" or "home" calendar from iCal, then import it into iCal but select the Entourage calendar as the destination.
Contacts - Import these into address book directly from the file provided by O2M.
iPhone - when I sync'd my iphone I thought I'd lose some of the applications I had installed on it. The menu options seem to tell you that you will, but don't panic because when you go and try to buy them again it tells you that you don't need to pay since you had bought them previously. They are then reinstalled for free.
I have given a very high level picture here. Just so you know, I have managed to successfully migrate my whole computer over one weekend using the advice in the Mac Forums and the details of all of the above are better documented elsewhere. What I have given is the ones that worked for me and they have been quick and easy.
Good luck,