Kill 'Em All: Metal Militia. It suffers from coming right after Seek and Destroy, which I feel is a great album closer.

Ride The Lightning: Fade to Black/Escape. Escape is too poppy, Fade to Black is a song I just generally really dislike, to the disdain of most members of this sub.

Master Of Puppets: None, but if I'd have to pick one it'd probably be Leper Messiah because it's the least standout song on the album.

...And Justice For All: Eye of the Beholder. I play it halfway through and then I sorta know where it's going so I skip to the next track.

The Black Album: Through the Never. Never really got into this song, if someone can convince me why it's good let me know!

Load: The House Jack Built. Takes a little too long for me.

ReLoad: The Memory Remains. It's overplayed and I dislike Marianne Faithfull's contribution, although I like the fact they worked together with her it just doesn't feel right.

St. Anger: Easier to say which one I skip the least, which would be Purify.

Death Magnetic: My Apocalypse. See Metal Militia, it's not a terrible song but the previous song is a good closer.

Hardwired To Self-Destruct: Murder One/Am I Savage?. I skip both of these equally, but if I had to pick I'd say Murder One because at least the vocal hook from Savage's chorus is worth listening too.