MySQL - InnoDB vs MyISAM

Most people who use MySQL know that MyISAM and InnoDB are the two
most-common database engines available with the popular opensource
datbase provider. I would be that most of those people don't even take
the time to select a storage-engine and just accept the database
default. Those of you who are left probably heard from a friend who saw
something online that said one of the two is better than the other.
Those of you who are left will still probably learn a thing or two here
:)