"Ygology" - The Study of Palindromes

The Dictionary Evangelist has an entry about "ygology," or the study of palindromes. In case you've forgotten, palindromes are are words or sentences that are the same backwards or forwards. For example, "Satan, oscillate my metallic sonatas." Or "Step on no pets."

There are also phonetic palindromes. A while back I accidentally discovered that "review" sounds the same forwards or backwards when played back in reverse by tape or audio software.

Then there are words that just sound cool when said backwards, like "continental."