Top 10 avgs for screenwriters who aren't directors

[geohawk]

1. Bob Baker - 94 (3) - Aardman stuff
2. Ryûzô Kikushima - 88.67 (3) - Kurosawa credits
3. James Schamus - 86.67 (3) - Ang Lee credits
4. Ruth Prawer Jhabvala - 77 (4) - Merchant-Ivory credits
5. Shinobu Hashimoto - 76.75 - Kurosawa credits

Jane Austen and Nick Hornsby show up for source authors.

[metalhank]

Update with now over 3400 films
Using 5 minimum including average rating percentage

1. Ronald Shusett 93.67%(6)...mostly alien series and total recall films
2. Fran Walsh 92.11(9)...peter jackson films
3. Philippa Boyens 91.86(7)...peter jackson films
4. Dan O'Bannon 88.88(8)...alien series and other si-fi movies
5. Zak Penn 87.33(6)...marvel and a few action/sci-fi; has 3 director and 25 writer credits so I counted him here
6. Michael Green 85.60(5)...a little marvel and sci-fi
7. Jane Goldman 84.88(8)...x-men, kingsmen and variety
8. Robert Wade 83.83(6)...bond and bean bond series
9. Neal Purvis 83.83(6)...bond and bean bond series
10. Richard Maibaum 83.57(7)...older bond films

top 3 novelist and creators with credit
1. J.R.R. Tolkien 97.00(5)
2. Jack Kirby 92.00(8)
3. Gene Roddenberry 89.80(10)

top 3 writer/director
1. Peter Jackson 94.00(8)
2. Paul W.S. Anderson 91.33(9)
3. Lawrence Kasdan 91.20(5)