A 2010 episode of "Glee" featured which singer's song "Hello Again"?

A 2009 Time poll, taken after Walter Cronkite's death, named which comedian America's most trusted newscaster? A 2009 Ig Nobel Prize went to research showing that cows with names give more of what? In 2010, which language invented by linguist Paul Frommer for a blockbuster film was called "the new Klingon"? A 2010 survey found nearly half of Germans wanted to give up the euro and bring back which currency? In which country did the famous Rijksmuseum open a small branch at Schiphol Airport? A 2010 Broadway musical about which family centers on daughter Wednesday falling for a "normal" boy? A 2010 order by San Francisco's mayor banned sugar-sweetened what from vending machines on city property? A 2010 stamp was issued in Old Saybrook, Connecticut, honoring which legendary actress?