The reflections on Buzz's helmet in Toy Story (the original) looked raytraced to me, although it might have been very well faked.

I usec renderman in the mid 90s and it allowed selective raytracing per shader.

Certaingly the guts at cgsociety think there was raytracing in both Toy Story and A Bug's Life.

http://forums.cgsociety.org/archive/index.php/t-60329.html