"Viva Cristo Rey!", the last words of Bl. Miguel Pro SJ, in Mexico
Whenever possible, as at our parish, kneeling, receiving on the tongue, of course. Kneeling is the traditional Western expression of humility and reverence (see Aidan Nichols' book on the liturgy for a much better explanation of this and other aspects of the sign value of traditional worship). If the US bishops' committee says it's all about penitence instead, well we (and they--see the Diogenes thread below) certainly could use some of that, too.
Receiving on the tongue is also the traditional Western way, hallowed by more than a millenium of use (which, if you believe in the presence and activity of God in history, must suggest, if not dictate, the conclusion that this is the way our Lord wants it) even if not done in the earliest times. By doing so, one receives our Lord directly from from His minister, who stands in persona Christi, rather than communicating oneself, which, like standing for a Westerner, is oh, so democratic.
To those for whom democratic usages are normative, I would say: Long live Christ the King!
Or "Viva Cristo Rey!", the last words of Bl. Miguel Pro SJ, in Mexico, and the Claretian martyrs of Barbastro, Spain, among many others, and the battle cry of the Cristeros. Also the cry of Brent Bozell, Frederick Wilhelmsen and the Sons of Thunder in their famous "rescue" at the GWU abortion clinic in 1970, chronicled in Triumph magazine.
"Viva Cristo Rey!", the last words of Bl. Miguel Pro SJ, in Mexico