What is the name of Homer's boss in 'The Simpsons'?

Who created 'The Simpsons'? Where does Homer Simpson work? What is the name of the bar Homer frequents in 'The Simpsons'? Who owns the Kwik-E-Mart in 'The Simpsons'? What is the name of the Simpsons' next-door neighbor? What instrument does Lisa Simpson play? What is the name of the clown on 'The Simpsons'? In what year did 'The Simpsons' premiere as a half-hour series?