Re-reading good books

I'm strongly considering going through the process of re-reading certain books that I've read in the past, mainly because there simply aren't that many great new books coming out during any given year, and many of the ones I've read that are really good have been partially or wholly forgotten by me now.  Re-reading would allow me to re-learn some of the text and pick and choose what I want to read without having to read an entire book again.