Another author of the Packt Publishing book PHP Programming with PEAR, Stoyan Stefanov has his own post talking about the book and listing out each of the packages covered inside.
In case you've missed it - the PEAR book hit the streets! The exact title is "PHP Programming with PEAR" and it's co-written by Stephan Schmidt, Carsten Lucke, Aaron Wormus and yours truly. Aaron also put up a Wiki for book and PEAR-related updates, it's at thepearbook.com.
His (hopefully) comprehensive list of packages covered includes:
...and many, many more. I haven't gotten a chance but to hear other's comments and check out a bit of this book, but it definitely sesms like a great resource for anyone wanting to get into using PEAR for their applications. Check out the Packt site
for a full chapter listing of everything covered.