Hm, I actually had to Google that one :)
I've only read (correction: attempted to read) one of Niven's books ... the experience left me somewhat less-than-eager for another attempt :(
"Ringworld" and "Ringworld Engineers" were pretty much the last works of fiction I read, 20+ years ago, other than LOTR which I re-read before the first of the movies came out, just to refresh my memory. Those are amusing.