Anyone remember this quote from the episode where Fonzie's nephew Spike teamed up with some hoods to rob Arnold's and Fonzie says to Spike "There's a big difference between a life of cool and a life of crime?" To me, it was one of the most memorable quotes from early in the show's run.

Here is that clip:
http://thumbnails111.imagebam.com/33037/219558330363808.jpg (http://www.dailymotion.com/video/x1xwvus_season-3-episode-61-bringing-up-spike)
http://www.dailymotion.com/video/x1xwvus_season-3-episode-61-bringing-up-spike
ENJOY!

The Fonz was still cool then. Me personally, I liked it when he said "2 + 2 = 5, that's a mistake, what you did was mean, down right mean!"
Season 3 Episode 61 "Bringing Up Spike"