How about in the beginning 2 jazz versions of the famous classical songs are playing that also played in 2001, (in the beginning and when they first go to space i believe). (I forgot the names, sorry)

Yes, indeed. There are several references to "2001" in this movie; did you observe the red light dot on the TV, when it activates the alarm function in the very first scene?

Insightful observation! and the movie did includes a disco version of also sprach zarathustra.

Interesting observationgiven the prominence of the movie 2001 at the time.and his having worked with Kubrick in StrangeloveI can easily see him picking up Hal's traits.

Reminded me of Dustin Hoffman in Rainman at times.

Hal 9000 yes, thought the same thing.

Then Sellers succeededhe repeated his lines over and over into a recorder.Playing it back and adjusting his tone to sound as monotone as possible..Like a person who learned how to speak listening only to the radio and then TV

Hah kind of , yes I would agree . I also thought possibly the robot from Irobot.