Corner-Case-Driven-Development is an exciting version of development where all extreme corner cases are highlighted each step of the way.  It is especially important to interject a corner-case once someone starts to talk about the fundamental features of the system, as getting distracted by the core things, like what a user wants to accomplish, is a no-no in the corner-case methodology.  When embracing corner-case-driven-development, a team can expect a number of exciting things to happen, including: difficulty developing and maintaining the code, un-met deadlines, and generally low team morale.

Read about more exciting methodologies here: http://www.scottberkun.com/blog/2007/asshole-driven-development/.