Waaaaay too many engineers on this forum all debating torque specs of drain plugs... WHO uses a torque wrench on a drain plug?!?!
I've done roughly 20000 oil changes, nary a single oil out or leak, and I've never had to use a torque wrench. Never had an issue getting a plug out either (worst case you cut the plug down and hammer on a smaller socket).
Seems like using a torque wrench on a drain plug is not only un-professional its un-advisable.
EDIT: oh and the crush washer thing... I've changed MAYBE 5 of those in my life.