One of my favorite movies all-time. I've watched it 6 times now.
The scene when they're talking about relativity and Gargantua just blows my mind. The science of it. Fascinating. Same when he enters gargantua and gets into another dimension and behind Murphy's books. Took me a few times through to realize that HE was the gravitational anomaly early in the movie and the 'ghost.
My brain has orgasms when I watch this.