Necromancer: similar but not identical to the badge of the same name. Best answer posted in 2015 to a challenge from before 2014.
(The gap of a full year is to exclude answers to challenges which were posted just before New Year's and answered just after it.)
Since almost all tips answers fall into this category, the tips tag is excluded from this. I have added a separate category for those.I have added a separate category for those.