Reddit reviews A People's History of the Supreme Court: The Men and Women Whose Cases and Decisions Have Shaped OurConstitution: Revised Edition

First year lawyer chiming in. I second the not-reading-prior-to-law-school advice, but if you're really begging for it, I think these two books might be helpful:

• A People's History Of the Supreme Court. It provides an interesting context to the politics behind some of the court's most formative decisions, and it can help jump start you into thinking about some of the more complicated issues that impact the law.
  
  
• Law School Confidential. Definitely more of a guide to how to succeed in law school. I read it on then plane when I moved for law school, around July. It provides a lot of guidance about law school that people don't usually have unless they come from a family of lawyers.
  
  Edit: While you can't really "prepare" for law school prior to experiencing it, you can somewhat increase your tolerance for reading (which is a HUGE part of the law) by reading non-fiction books. This would only be if you really lack that type of discipline, but if you already love reading, it's probably less important.

I think it's a big jump to assume that because I watch Dexter, I mustn't watch anything educational. In fact, many of the things I watch are more along the lines of documentary, educational or opinionated films. The same goes for most of my reading. Much of it is nonfiction, considered a classic or philosophical in nature. My current reading is this and the next one I plan to tackle is this.
I agree with Metaphoricalsimile. It does seem more absurd to assume that leisure activities that involve the enjoyment of entertainment or works that are simply creative in nature have no value whatsoever. I also agree with neoumlaut that we should diversify our activities (assuming that by "Are we really unable to find something to fill the 24 hours waiting for the next disk?" is an implication that there are other things we could be doing). However, you seem to be taking the one example of my activities that I have listed and ran it all the way to the extreme.

I really enjoyed A People's History of the Supreme Court by Peter H. Irons. Here's the synopsis

"Beginning with the debates over judicial power in the Constitutional Convention of 1787 to controversial rulings on slavery, racial segregation, free speech, school prayer, abortion, and gay rights, constitutional scholar Peter Irons offers a penetrating look at the highest court in the land. Here are revealing sketches of every justice from John Jay to Stephen Breyer, as well as portraits of such legal giants as John Marshall, Oliver Wendell Holmes, Earl Warren, and Thurgood Marshall. Astute, provocative, and extremely accessible, A People's History of the Supreme Court illuminates and pays tribute to a system of justice that both reflects and parallels our country's remarkable legal history."

https://www.amazon.com/Peoples-History-Supreme-Court-OurConstitution/dp/0143037382

https://www.amazon.com/Peoples-History-Supreme-Court-OurConstitution/dp/0143037382/ref=sr_1_2?s=books&ie=UTF8&qid=1543117844&sr=1-2&keywords=people%27s+history+of+the+supreme+court