Export to powerpoint?

I feel dirty suggesting this, but it would be incredibly helpful if OmniGraffle (Pro, I guess)
could export PowerPoint pictures.

I spend a lot of my time creating slides, most of which contain pictures that I create
using omnigraffle. My current mode of working is to copy pictures as PDF, so I can scale
them, and have them look good when presenting.

But there are times when I want to animate the building of picture, which means I either
have to use the PPT drawing tools or build multiple slides to fake the animation.
Neither of those is pleasing. Having "Copy As" -> "PowerPoint picture" would be the
most useful for the way I work.

Either that, or could you just create your powerpoint replacement? ;-)

Neil