Niven is a fairly prolific writer, and has a _lot_ of fantastic SF under his belt. Some Niven you can try includes:
- Ringworld series
- Integral tree series (I think that's what it's called - set in a "gas torus" around a star)
- "Known space" books - too many to count, but include all the Kzin books (and the Ringworld for that matter)
- The "Motie" books - The Mote in God's Eye and The Moat Around Murcheson's Eye (also known as The Gripping Hand) - Corwritten with Jerry Pournelle. If you don't read any other Niven, read these!!!!
- Other excellent books are Footfall and Lucifer's Hammer (again with Pournelle)
There's more, but these are what I've read and love. I also don't know how many of these are in legal ebook form either
Craig.