I read Moby Dick twice: once in junior high, when a lot of it didn't hold my interest; and more recently, when I really enjoyed it.
Some of the whaling philosophy and politics as well as some of the details of the actual techniques of whaling can be pretty heavy sledding (if I may be allowed such a metaphor); but the intensely-drawn characters, story, and thrills are not to be missed!

I have read PARTS of Moby-Dick (I've probably read ALL the parts, but never in one continuous read from beginning to end).

Some parts of it are overwhelming (in the good sense of the word), like the chapter that discusses the colour white. I can certainly see how grappling with the white whale back in the 1950s influenced Bradbury's writing thereafter.

"He tasks me...he tasks me - and I shall have him." (lol)

Hey, wait a minute now. Wasn't that line used by Ricardo Montalban in the film 'Star Trek II- The Wrath of Khan..."?

Man, you have to like how Montalban delivers a line, though.

Ricardo uses a lot of Ahab's lines in that film. That was Nicholas Meyer's doing (the director).