why not wait until the next version 1.5 of the iPhone comes out? It's sure to have things like this in there.

no, i believe the iphone email and web browser have the ability to read word excel and pdf files

you don't need to jailbreak or download anything if all u want is PDF, Word documents and Excel the person above doesnt know what hes talking about the text below is from apples website mail (and safari) on the iphone support all thsee file types (even the Office 07 files) "Open an attached file You can view or read some types of files and images attached to messages you receive. For example, if someone sends you a PDF, Microsoft Word, or Microsoft Excel document, you’ll be able to read it on iPhone. Tap the attachment. It downloads to iPhone and then opens. You can view attachments in both portrait and landscape orientation. If the format of an attached file isn’t supported by iPhone, you can see the name of the file but you can’t open it. iPhone supports the following email attachment file formats: .doc, .docx, .htm, .html, .pdf, .txt, .xls, .xlsx" from http://support.apple.com/kb/HT1666