Here is an interesting story for you.
Once, in the 80's this bartender had a patron who claimed to be a time traveller. The story is quoted below;
"In my bar tending days (80's) I had a guy tell me that he was from the
future. The guy also told me that not only was he from the future, but
that the CIA beamed hit lists to him over the TV signal. I looked up at
the TV in the bar that was tuned to Hill Street Blues and told him that
I must not get that channel, went to the phone, and called the cops to
get this schizophrenic nut out of my bar before the CIA told him to kill
me. "