Mashable just posted a great tip -- you can now download a free Adobe Reader App for iPhone & iPad. Here's Mashable's post: This marks Adobe’s first official version of Reader for iOS devices.
Here are the system requirements:
Requirements:
Compatible with iPhone 3GS, iPhone 4, iPhone 4S, iPod touch (3rd generation), iPod touch (4th generation) and iPad. Requires iOS 4.2.5 or later
GO