This is a short endorsement of the iAnnotate application for the iPad, produced by Aji and available on iTunes for $9.99.
I used to maintain piles of case law on a bookshelf, working my way though cases one highlighter at a time. I bought an iPad to rid myself of the enviro-guilt borne by my case law habit and was also happy to get rid of highlighters – my suits, shirts, linen, pets and kids too-often marked with indelible pink, green and yellow. The iPad, however, was a less than perfect replacement until I installed iAnnotate about a week ago.
iAnnotate has a been a great solution for downloading and actively reading case law. I've annotated cases for file work and feel good about saving them to our DMS having captured the "product" of my reading. I've also highlighted and annotated cases for professional development and have easily shared cases with embedded comments.