I find that the Factory Method, Abstract Factory, Template Method, Composite and Command Patterns are in my most used list.
I use variations on these as they provide a diversity of whitebox vs blackbox implementations.
My favourite is coalescing various patterns with the Composite pattern. example: Command and Composite or Decorator, Command and Composite.
It is very powerful.
Mostly though I find that I always need Coalescent Patterns (2 or more merged together).
I cant remember who coined the phrase "composite patterns" (lower case 'c') to describe 2 or more merged patterns.
But I dont like the confusion it brings between the actual Composite pattern.
I use the term "Coalescent patterns" to describe merged patterns.
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