These are two important terms for establishing how postmodern adverts, films, TV programmes, music videos, video games, etc. become "viral" and emotionally connect with audiences. This piece by an advertising agency is a must-read. Consider how audiences encounter spectacle and emotion(s) in Mad Men, the Sony bouncy balls TV advert, the Cadbury's Gorilla advert and Grand Theft Auto IV.
However, the use of 'spectacle' in this piece is not Guy Debord's view of this concept which he sets out in "Society of the Spectacle" (1967.) A difficult but very enlightening read.
Society of the Spectacle