Time Chasers (1994)
When Nick and Lisa are walking down the alley of the altered future, nearly-destroyed posters are along the wall. One of them is for Back to the Future.
"I thought I was watching Time Chasers."
"When the guy from Time Chasers has more advanced computer tech than you, seek help."
'Tangents' (aka 'Time Chasers') is the featured movie in this 'MST3K' episode.