I went to see this movie with my girlfriend earliar today, and it was an experience that hit me like a rock and left a scar that i will always remember. I am a heavy smoker, and at 18 years old. Watching this movie was enjoyable, it was funny. The seriousness of cancer was tucked right under it. I thought: i can never get new lungs- if there is any time to quit smoking cigarettes it is now. 50/50 left me dying of laughter, with an ill bitterness deep inside. It left me feeling uncomfortable amlost the whole movie and on. I felt that i saw Adam and katherine being together in the end coming, right from the start. Her timidness gave it all away. I thought Adam had cancer for real. The humor was just right, and delivered a clear message smoothly. AWESOME MOVIE.