Problem: How to view PDFs on an iPad.
Solution: Using an iPad in lieu of a laptop is convenient when you're on a business trip or stuck in endless meetings. There's one problem, though: The iPad doesn't have a built-in reader for PDF files, unless you're viewing PDFs in Mail or Safari. Good.iWare's GoodReader for iPad to the rescue! This $5 app is adept at handling gigantic PDF files larger than 100 MB, including manuals, renderings, and magazines. It also supports MS Office formats, including .doc, .ppt., and .xls.
For a more enterprise-friendly option, check out Nexus from ionGrid, a server-and-app combo with built-in viewers for PDFs and Office files. Nexus streams secure documents from your company server to employees' iPads.