“GoodReader® is the super-robust PDF reader for iPad, iPhone and iPod touch. It can read virtually anything, anywhere: books, movies, maps, pictures. If you work with documents, soon you’ll be wondering how you ever managed to use your iPad or iPhone without GoodReader.” GoodReader costs $4.99 in the Apple App store and the app allows you to annotate all PDF files.
Click here to find out more and to download GoodReader.
Click here to read Wired Magazine’s review of GoodReader. (Thanks to Louisa Lambregts for sharing this resource.)