[fjtorres]

AI's?
Here's a few:

Heinlein had several AI's.
The best realized AI of them all being Mycroft (Holmes), aka, Mike, aka Mychelle, aka Adam Selene. From the MOON IS A HARSH MISTRESS.
Lazarus Long's spaceship AI, Dora, is another example.

Asimov's most prominent AI is R. Daneel Olivaw, discoverer of the Zeroth Law of robotics.
Lester DelRey gaves us Helen O'loy, a robot who learned to love.
Edmond Hamilton's CAPTAIN FUTURE stories featured Ortho, a shape shifting robot.

The movies gave us johny five, the inquisitive robot of SHORT CIRCUIT, Disney's Wall-E, and the nameless Maria-impersonating robot from Fritz Lang's METROPOLIS. TV's Gene Roddenbery and DC Fontana gave us Questor who, like Commander Data, sought to understand and help humanity.

If you include game narratives as well as movies, the HALO series has offered up Cortana and the Supervisor, the MASS EFFECT trilogy the hive-mind Geth (whose sentience resides in millions of networked non-sentient drones) and the genocidal self-evolving Reapers.

For my money, tops is Mycroft, barely ahead of Daneel and Helen.
(And their three stories are must reads.)