I have Netflix, Hulu Plus, and Amazon Prime. I use each of them for different reasons, but altogether my monthly bill is still less than that I would pay for cable and the viewing selection is better. I might add an anime-specific service soon (debating between Crunchy Roll and Funimation).
Crackle, in my opinion, is worthless. The ads, unlike with Hulu, are placed wherever in the show and it breaks up the show's continuity. Nothing is more frustrating than getting into a show and then out of nowhere a Geico ad pops up.