For the most part, YES. It offers easier use and far better transitions and "eye-candy".
However, in an environment where I have to share presentations (read: create them so my boss can present them and take the credit) with others, PowerPoint is still the better option. You can import/export from Keynote, but it's not seamless and usually requires quite a bit of reformatting.
It is definitely easier to create professional looking presentations in Keynote, but it lacks a lot of the options available in PowerPoint. I hope that there will be a Keynote 2 soon which I can endorse without such qualifications.
Comments
For the most part, YES. It offers easier use and far better transitions and "eye-candy".
However, in an environment where I have to share presentations (read: create them so my boss can present them and take the credit) with others, PowerPoint is still the better option. You can import/export from Keynote, but it's not seamless and usually requires quite a bit of reformatting.