In what year did 'It's Always Sunny in Philadelphia' premiere?

Who created 'Supernatural'? On which network did 'Prison Break' originally air? In what year did 'Prison Break' premiere? Who created 'Prison Break'? Who created 'It's Always Sunny in Philadelphia'? On which network did 'Everybody Hates Chris' originally air? In what year did 'Everybody Hates Chris' premiere? Where is 'Everybody Hates Chris' set?