My favorite perk, from any job I've had, was being allowed to insert a POI[0] into the USGEO[1] dataset before MapPoint 2000 shipped. The tradition lived on for a couple releases before it got canned.

[0] http://en.wikipedia.org/wiki/Point_of_interest

[1] USGEO owned the data underneath two shipping products, MapPoint and Streets and Trips, as well as several online products.