I actually have three George Carlin books!

He's one of my all time favorites.
Wrestling related books I would recommend Mick Foley's first two (Have a Nice Day, Foley is Good), or "The Death of WCW", it really makes you see the end of the Monday Night Wars a lot differently, though you may already be aware of a lot of things that happen in it. However, it really shows how WCW final demise really wasn't Vince McMahon, Russo or even Uncle Eric.
If you like something a bit lighter I would honestly recommend the Hitchhiker's Guide to the Galaxy, if you like it, read the whole series.
I started A Song of Ice and Fire since I love Game of Thrones, it's pretty fun. Reminds me of The Wheel of Time but a bit more violent.