Best kept secret on Android.
Streaming TV over wifi or 3G. Dozens of current and past popular TV series, with multiple seasons instantly available to be played on your phone.
Cost: US$4.20-ish / month if you pay the single, annual sub. For NZ$6 / month there is a huge array of on-demand content here.
Notes: No ads. Many series are right up to date (Mad Men, Stargate Universe) while others may be the first several series with the most recent ones / later ones missing (eg: Star trek: Next Generation - first 3 or 4 series only).
I watched all three series of "Mad Men: streaming onto my phone. I'd missed them all. That alone was worth the annual sub.