Most of my "favourite" execution methods are of non-Medieval origin.
My favourite methods:
Scaphism, flaying, helicopter gunship, beheading, crushing by elephant foot, assault rifle to the brain stem.
Highly incisive, very aware and very intensely strong-minded and pragmatic logician and tactician, very high-grade threat detector, nurturer of life-saving mental enhancement and developer of superior methods of societal organisation. Vehement advocate of human advancement, invulnerability and continuity / realisation of desirable and protective human and societal attributes (will viciously oppose any person or entity threatening these, without exception).