by Claudine Zap Lady Gaga may have inspired many things, but here's one we wouldn't have guessed: A grandpa with some serious moves . A video that's mesmerized the Web (poor quality aside) stars an older man grooving out to Lady Gaga's song Poker Face . After Ms. Gaga sees this gem, she may want to hire " Grandpa Gaga " as a backup dancer. As you'll see on the video , Gramps not only hits the dance floor for the entire song,