Here’s my entry for the The Daily WTF‘s Programming Praxis: Russian Peasant Multiplication:

function peasant1(a, b) {
var value = a & 1 ? b : 0;
while(a > 1) {
a >>= 1;
b <<= 1;
if (a & 1)
value += b;
}
return value;
}
function peasant2(a, b) {
var value = a & 1 ? b : 0;
if(a > 1)
value += peasant2(a >> 1, b << 1);
return value;
}
function peasant3(a, b) {
return a > 1 ? (a & 1 ? b : 0) + peasant3(a >> 1, b << 1) : a & 1 ? b : 0;
}
function peasant4(a, b) {
return a & 1 ? value = a > 1 ? value = b + peasant4(a >> 1, b << 1) : b : value = peasant4(a >> 1, b << 1);
}

*Related*