Straight up, dhoom 3 make you lough, gisp-even sniffle.The most emotional of the dhoom series yet, this is Amir Khan's show all the way.As revengeful circus star Sahir, whose father iqbal dies after losing his beloved Great indian circus to a stony-hearted chicago bank, Khan is teriffic.The dhoom series usually showcases brawn on bikes but in this one, mind meets machinery, Khan's brain almost visible ticking behind his eyes, calculating every second before he vrrooma on bikes -across wire stretched high between buildings, beneat a mega truck, even underwater.