It was the first live-action scripted series produced in-house for Nickelodeon, still fondly remembered 25 years later.
Hey Dude launched in 1989, and aired during the summer months. Set on---what else?---a dude ranch, the series focused on a group of kids who were staying at the camp.
Nick aired the series on weekdays as well as weekends, but didn't play it into the ground the way they eventually would with their programming in the years to follow.
I didn't follow the series, so there's no rating. Here's the open: