The Moon is a Harsh Mistress is definitely my favorite. I don't think Fear no Evil was that bad -- I think it was the last decent book he wrote.
I remember reading the serialization of the first few chapters of Number of the Beast in Omni magazine, and thinking how great it was. Then I got the book and read the rest, and was sad.
Oh yes, Number of the Beast started out good. That's actually what makes it more frustrating.
I think part of my problem with Fear no Evil is that I read it just after reading all of the Lazarus Long stories (which I enjoyed a lot) and coming from that Fear no Evil just wasn't as good...
I actually did like Job A Comedy of Justice which he wrote after Fear no Evil... It's very different from his other books and I wouldn't say it's great but it's fun.
Friday is one of his few novels that I never read..
I sort of like Friday, but I wouldn't really recommend it to someone who isn't also a Heinlein completist. I don't think it is bad, but it's not one of his stronger novels, and I understand why a lot of people really don't care for it; Heinlein is always most controversial when he writes first-person female characters, and there are good reasons why that's so.
I remember reading the serialization of the first few chapters of Number of the Beast in Omni magazine, and thinking how great it was. Then I got the book and read the rest, and was sad.
Don't get me started on _Friday_.