End of the year is always the time to publish rankings. Wired Magazine has an interesting one. They ranked the best 50 robots of all times.

Interesting is that they chose the winner of this years DARPA Grand Challenge. Stanley, the Stanford University autonomous Volkswagen Touareg is the best robot of all times. ( at least until next year).
The Wired Magazine top 50 robot list also contains Astroboy, Terminator or the Tin Woodman - Somehow they had to fill the list.
They forgot the sexiest robot though - the Repliee Q1 aka Actroid. I mean what the heck, she breathes. Prominently missing is also Honda's Asimo. Even that Asimo can run now did not qualify him for Wired Magazine (at least they listed his predecessor, the Honda P2).

See also PC World's Top 50 Gadgets of the past 50 years.