8. Tommy Chong and Willie Nelson Had Surgeries
Some of our leading CelebStoners are aging and hence dealing with medical issues. Tommy Chong beat prostate cancer, but then was hit with a bout of rectal cancer, which required surgery to remove a tumor in October. Willie Nelson, who suffers from emphysema, underwent a stem-cell procedure to help his lungs, also in October. He missed a few shows and then went back out on the road again.