i bought Office and downloaded iWork.
uses Word for documents, and Keynote for presentation. thats pretty much all i use.
cause Powerpoint is rubbish, Pages and Numbers isn't as good as Word and Excel, and Entourage is useless.

maybe im used to Word.
but i agree with you on Keynote. Powerpoint is absolutely rubbish compare to Keynote. It is so user-friendly that even a 10 year-old child can make a professional keynote.