As a developer, code coverage analysis should be in your bag of tricks. By exposing code not covered by unit tests it helps to improve the test suite, identify edge cases and eliminate dead code and other logical flaws.
The talk will explain different types of coverage, discuss what coverage analysis can achieve as well as its limitations, and show how to do it. Most of the examples use Perl 5 and Devel::Cover, but the subject matter is fairly language-independent.