I am an Oracle SQL and PL/SQL fanatic. I love writing and tuning large queries and gluing them together with PL/SQL.
I recently finished writing Pro Oracle SQL Development. It should be released in April but you can pre-order it now.
If you work with lots of Oracle databases check out my open source remote execution program Method5. It lets you easily run SQL, PL/SQL, and shell scripts quickly and securely on hundreds of databases.
Feel free to email me about my projects, answers, or book at firstname.lastname@example.org