After weeks of high-octane stunts, unexpected twists, friendships, rivalries and plenty of entertainment, Khatron Ke Khiladi 15 is heading into its much-awaited Grand Finale this weekend. But what made this season stand out was that it was not just about conquering fears, it was about the unforgettable moments that unfolded along the way. As the final showdown is just around the corner, here are five big highlights that made Khatron Ke Khiladi 15 a blockbuster hit — and why o