What are the Earth-like features of Titan? This NASA site says that hidden beneath the smog of Titan are Cirrus like clouds and This space article describes how Titan's atmosphere is similar to Earth's too. 

What other features does Titan boast that make scientists so ready to boast that "Titan may well be the most Earth like planet we know of besides Earth itself"? (paraphrased)

Answers should focus on the features of Titan itself, obviously a similarity is that it orbits the same Sun, but this type of thing is not what I'm after. I am mainly searching for geological or atmospheric similarities that Titan shares all the way down to potential similarities in the composition and flow of the planetary core.
To expand a bit on Undo's answer, there are some geomorphological features on the surface of Titan that resemble similar features on Earth, suggesting similar processes.

For example, according to this NASA image comparison, some lake features have features that are similar to groundwater based salt pans on Earth. Image below:



The feature on the left is Ontario Lacus on Titan compared to the Etosha Pan of Earth on the right.  It should be noted, that the Titan feature is considerably larger than the Earth analogue.