What's scarier than doing the Viennese Waltz to "Pure Imagination"? Laurie Hernandez can tell you: It's reality star and actress Terra Jole popping up during your Dancing With the Stars interview. In the above video, the Olympian thinks she's there to talk about working with her partner Val Chmerkovskiy. Little does she know her fellow DWTS competitor is there, waiting for the right moment to scare her. "What the f—k?! I hate you so much," she screamed. Isn't Halloween grand? In addition to their Waltz, Laurie and Val may also participate in a dance-off. Here's how it works: the couple with the highest score from the individual dance round gets immunity...