The dark tower series is one of his best IMO. Unfortunate he ended the series earlier than planned... Was supposed to be quite a few books longer but I remember reading (and I could be remembering wrong) in the foreward to one of his books that the weight of people sending him letters such as "I'm terminally ill, i was hoping you could tell me how it ends before I pass" and all the other contact he got led him to cut it a bit short. That said, I think it's his best work.

The intro to the first book was kind of sad, with mails from sick people and people sentenced to death asking King how it ends and he was unable to respond because he wasn't sure where he wanted to go.

So I’ve read Hitchhiker’s but was always curious about the others he wrote, any thoughts? Thanks!

I tried Dirk Gently's Holistic Detective Agency, and never really managed to get to the end. I was somewhat disappointed cause I had my expectations up to the Hitchhiker's guide. On the subject of the Hitchhiker's guide, I liked "And Another Thing..." the most(though it was largely written by Eoin Colfer.

You may enjoy the audiobook versions of the Dirk Gently series, which are fully scripted and voice acted like a radio play. It was a really fun experience, and very well acted!