This show was so much fun, I don't even know where to begin. I loved it as a kid, and I still love it now when I see it in reruns... only now it seems hilariously hokey, which makes it even better.
Not only did every single episode have the exact same plot (evil criminal mastermind wants to get rich and/or take over Texas), but the EXACT SAME THINGS happened, too. For instance, in EVERY episode of the show, Walker and Trivette would walk into a bar and start questioning the bartender. After about 15 seconds of questioning, the bartender, along with 10 or 20 random patrons, would break out in karate. Apparently everyone in Texas knows karate. It's like a cult down there.
And then there were the episodes where Walker would tell stories of a Texas sheriff who lived in the days of the Old West... who was, of course, played by Chuck Norris. I believe there was also an episode where Walker himself was transported back in time to the Old West.
I could go on and on, but I'll just summarize by saying that it was an awesome show, with awesome karate fights, and awesomely unrealistic plots. But of course, it was never meant to be taken seriously; it was just meant to be enjoyed. It also neatly wrapped up every episode with a nice moral or message. Thank you, Chuck Norris, for eight years of ass-kicking action.