What nationality is tennis player Novak Djokovic?

More Questions:

What birds were traditionally used to detect dangerous gases in a coal mine?

What company developed the first laser printer in the 1970s?

How many squares are there on a chessboard?

In karate, what color belt is earned just before black?

What color is the legendary Hope Diamond?

What candy company makes Goobers and Raisinets?

What kind of sporting event is divided into chukkas?

What two colors are the cat's hat in "The Cat in the Hat"?

What painter's mental state is revealed in 750 letters he wrote to his brother Theo?

Who replaced Severus Snape as Potions Master at HogwArts School?

Cape Hatteras National Seashore is located on which coast?

Who played Leon, Roseanne's boss at the café, on the sitcom "Roseanne"?

Who starred as Danny Ocean in the 1960 movie "Ocean's Eleven"?

Who played the teenage prostitute in the 1976 film "Taxi Driver"?

"Green Arrow: Year One" is a limited series published by who?