Who has won Oscars in the most categories?
Who is the only person to win Emmys for acting, writing, and directing? (Hint: It was all for the same show.)
Who has won Tonys in the most categories?
Who is the only man to win a Tony for playing a woman? Who is the only woman to win a Tony for playing a man?
Who has won Grammys in the most categories?
Who are the only two people to win Nobel Prizes in two categories?
Who, in 2005, was nominated for an Oscar, a Tony, and an Emmy?
UPDATE: Question 7 added.
I think he's the guy who won for playing a woman (the mom in Hairspray).
Jerry Seinfeld only won one Emmy, and it was for Best Comedy Series (he was a producer). He was nominated for writing once ("The Pony Remark") and acting several times. He never directed an episode of Seinfeld.
7 is Alda, yes.
Another famous question is who won an Oscar, Tony and Emmy in the same year.
At least nine people have won an Oscar, an Emmy, a Tony and a Grammy. I believe Rita Moreno was the first. The others are Helen Hayes, John Gielgud, Mel Brooks, Audrey Hepburn, Marvin Hamlisch, Richard Rodgers, Mike Nichols and Jonathan Tunick. Hayes and Moreno are the only ones to win all four as performers.
There are probably several others who have won an Oscar, an Emmy and a Tony but not a Grammy. Jack Albertson leaps to mind as one example.
The woman who got an Oscar for playing a man was what's-her-name in The Year of Living Dangerously, I think.
2) Alan Alda, for MASH
3) Harvey Fierstein
4) Harvey Fierstein for Hairspray and Mary Martin in Peter Pan. The rest of the answers provided all played their own gender pretending to be the opposite gender, but only these two actually played the opposite gender.
6) Marie Curie and Linus Pauling
7) Alan Alda -- The Aviator, Glengarry Glen Ross, The West Wing
As for #1 and #5, they're still open questions. Some people threw out some suggestions. Can anyone beat those?