come try the largest variety of lobster dishes of the year, like lobster lover's dream or new duelili lobster tails. it's a party on every plate, and you're invited. >>> it's the video going viral. try watching this one without smiling. 106-year-old virginia mclaurin was over the moon when she was invited into the white house. >> she's 106! >> no, you are not. >> reporter: she was so excitit she couldndn help but dance. >> what's the secret to still dancing at 106? >> just keep moving. >> reporter: the video went viral, viewed more than 42 million times. such an encounter beyond a dream. >> i thought i would never live to get in the white house. >> well, you are right here. >> reporter: that white house to so many people. >> and i tell you, i am so happy. >> how sweet is she. tomorrow night we're going on a journey to africa. a look at the modern war to save an aient animal. here's abc's t t. holmes with a sneak peek into the wild. >> south africa is home to over 80% of the world's rhino population. but they're facing extinction in the wild because of their highly coveted horns. i'm on patrol with