Who played April Ludgate in 'Parks and Recreation'?

In which TV series is Sookie Stackhouse a main character? Who played Patrick Jane in 'The Mentalist'? Who played Ron Swanson in 'Parks and Recreation'? In which TV series is Ron Swanson a main character? Who played Andy Dwyer in 'Parks and Recreation'? Who played Tom Haverford in 'Parks and Recreation'? In which TV series is Tom Haverford a main character? Who played Phil Dunphy in 'Modern Family'?