I'm a fan of both artists and I ran across this old Ween news article from 2001 where Dean Ween talks about a coloboration between the 2. Did this ever happen?
Don't take this as Gospel, but on the Dan end I'm not familiar with anything featuring Ween, and on the Ween end someone gave me a boot CD that seems to have ALL their rare tracks (up to a point at least) and again, I never heard no Dan w/them.
Their stuff with Yoko Ono kicks buttocks, tho.
- ndj