The coolest card stab ever (it being understood, of course, that I never got to see Malini) was done years ago by David Copperfield (on "Terror Train"?) using a switch-blade:
Card selected, shuffled into deck (actually of course, controlled).
Deck tossed onto table, cards mixed up apparently haphazardly on table top (selection controlled with a little hand mucking) entire jumble of cards covered with a sheet of newspaper.
Switchblade introduced, clicked open dramatically, stabbed down onto table; With one hand holding knife, edge of newspaper is gripped with other hand, and sheet is pulled away, tearing as it's pulled loose of the knife.
Knife is lifted revealing one card stabbed, stuck to it's point: the selection.