If You Liked That Video, Try THIS One: "Amazon and Netflix work well because their sites attract large audiences" [AdAge]
No, not the sites as such - but the recommendation engines, the algorithms matching preferences, interest and behavior over time to increase the "findability" in huge libraries of offerings.
And that is the challenge for a lot of the numerous web tv players - not big enough scale to give meaningful recommendations. Even Amazon can tend to get stuck in a track, making it hard to change the direction of the offerings "mistream" with out either manually ignoring a large chunk or just using the "similar" reccomendations from one nugget.
Maybe you should have different profiles and tracking for differnet moods, or uses? One for light comedy relaxing after work, another for meaningful insights before bed - and a third for mutually acceptable weekend fare.