Today on This Week in YouTube, Leah D'Emilio and Lon Harris report on the hottest videos of the week, including Kitties HATE Mermaids, an Irish salute to Barack Obama, Heidi Klum is my guitar hero, and more! Be sure to RATE and SUBSCRIBE to our YouTube channel: http://youtube.com/mahalodotcom Remember we're watching YouTube so you don't have to! Check out http://mahalo.com for more great news, entertainment, videos, how tos, and more!