Adobe has released version 9 of its Adobe Reader
PDF display software. The newest version includes a number of changes
including faster launching, "PDF Portfolios" (bundles of PDFs and other document types), native Flash support, and support for the online Acrobat.com beta (through Adobe AIR) with a variety of online PDF services.
Adobe Reader 9 is a free download
from Adobe and is platform (Intel/PPC) specific.