I haven't seen that many Fellini films:
La Strada, which bored me in college; I should watch it again.
Cabiria, which I like more than Sweet Charity, but I miss Cy Coleman
La Dolce Vita, which I thought of as Nashville in Rome
Juliet of the Spirits, great color and fantastic Nino Rota score
Satyricon, which I compare to Kubrick's The Shining, since both films missed the good points of their source material