As good of a computer science education that I think I received, when I was an IROC (Idiot Right out of College) I was definitely lacking huge in certain areas. Chief among these were software engineering (which I think I'm a lot better at now) and beyond basic OO, the fine art of Design Patterns. I've managed to read about half of Head First Design Patterns and actually implement a few at work. However, I still feel way behind on them overall, so I started a study group with some coworkers. We'll attack 2 patterns a week. I'll post notes about them and links to examples in my svn repository.
Enjoy!