Who had a 1999 hit with the song "Mambo No 5"?

Lou Bega

Which movie's plot involves robbers attempting to infiltrate people's dreams to plant a thought? Which insect creates light through bioluminescence? Which traditional British dish involves layers of sponge cake, custard, fruit, jelly, and cream? In 1889, which structure became the tallest man-made building worldwide? Who's the first friend to turn thirty?