Who played Jake Blues in 'The Blues Brothers'?

In which film is Carl Spackler a character? Who played Ty Webb in 'Caddyshack'? Who played John "Bluto" Blutarsky in 'Animal House'? In which film is John "Bluto" Blutarsky a character? In which film is Jake Blues a character? Who played Elwood Blues in 'The Blues Brothers'? In which film is Elwood Blues a character? Who played Prince Akeem in 'Coming to America'?