All my friends who have had to do treatment for cancer, one of the things emphasized is "Laughter is the best medicine". If you don't have any funny DVDs, borrow some or rent them. RV comes to mind of anything that can go wrong.... one person loved 3 stooges, another would like Red Skelton - he is one class act or how about Bill Cosby.
The DVDs can be comedy shows, stand up, etc. Saturday night live - especially the early years with Dan Akroyd, etc.
Good luck to anyone fighting illness. Now find your funny bone and laugh to get good endorphins to help with pain.