PDF to Keynote (pdftokeynote)

For people who enjoys LaTex presentation, beamer, this free software "pdftokeynote"provides an excellent link between pdf and keynote.  A pdf presentation is prepared using beamer with full functionality of math typesetting. Once the final pdf file is made, then pdftokeynote can convert the pdf file with a number of slides to a Keynote file. Each Keynote page includes a pdf image of the presentation.  Only slide transition is possible in Keynote.

http://www.cs.hmc.edu/~oneill/freesoftware/pdftokeynote.html