I've also always liked Indy surrounded by Thuggee on the rope bridge in Temple of Doom.
Throughout the films we always see the cool-headed and cocksure Indiana Jones who always finds a way to get out of any mess. But, here he is at his wit's end.
He sees no way out and does something so desperate and crazy, that even Indy most likely doubted his chance of survival.
I love how he delivers the "Prepare to meet Kali in Hell!" line as he hacks away at the ropes. He just thinks, "Screw it, if I die. We all die!"
At least he cared enough for Shortie and Willie to tell them to wrap their limbs in the rope before they went for their ride.
Also, another favorite, and one that I still chuckle over is. "We are going to DIE!".
Love the way he says it and the expression on his face.