Demonstrated at my grading:

6 empty hand forms

7 weapons sets

8 two person sets

You could also add to that the 6 wushu sets I led in the morning for the kids.

I did a quick total and I reckon if you include Tai Chi and Kickboxing and stuff I've done at seminars I know about 50 sets. So the grading only scratched the surface really! But I think in the final analysis it's not about remembering sets, but about how you move and use your body mechanics and your "chi". So still a long way to go. I'm not sure I want to rush straight in to learning another set for a while....