What are some examples of classical AI methods? All of the attention in the AI field over the past few years has been toward statistical AI, now that Machine Learning has been validated on hard problems.

However, I want to learn more about classical AI (also known as "symbolic AI" and "GOFAI--good old fashioned AI", and "expert systems".) 


What are some examples of classical AI methods? 


Please provide a brief description for each method listed.
If you're looking for AI systems:


Deep Blue
Eliza


If you're looking for specific algorithms:


Bayesian Networks
Decision Trees
Any search algorithm