So sad. I was still holding out hope for a (good) Ghostbusters sequel.
On a related note, I wonder if he will appear as a ghost (seriously). There was discussion at one point of having Peter Venkman (Bill Murray) die and appear as a ghost. I wonder if Ramis would have signed off on something like that, knowing his deteriorating condition. I wouldn't put it past a comic genius. RIP Ramis.