Which series has the best first episode?

I'd like to introduce friends to the show but I want to kick it off with the strongest possible start. Which series in your opinion has the most memorable first episode?

I think for me it's either series 16 ("Are you a child of divorce?") or series 4 ("I HAVE KNIVES!"). Both of them are completely insane and quintessential Taskmaster episodes. Is there a series with a stronger start in your opinion?