These are the projects I've worked on where I've either been the sole contributor or lead developer, while not a comprehensive list of the dozens of projects I've helped out with these are the most significant (fixing Wordpress CSS dosen't count). Some of these projects are personal, some are professional.
Working for an agency there are some projects I can't go into details on. In some cases below I discuss some of the thorny technical issues I've been able to tackle without naming specific projects or clients.