We’ve been running a weekly lunchtime session for interested developers on design patterns. I suggest that you do the same, as we have found it very valuable in coming to a common understanding of what each pattern is about, when you might use it and real world examples in our current code.
Somebody made the point today that we seem to have the most debate about what we perceive to be the mostly widely used and understood [particularly creational] patterns. This for me highlights the importance of running these sessions. We use something like the approach outlined here, but announce which pattern/s we will be looking at next week based on what is related / of interest / controversial.