Glad to see you are enjoying it! I had no doubt you would and I'm sure you will enjoy the next 2 seasons as well. Season 4 is when things go downhill but only time will tell if you'll enjoy the last 2 seasons (though the last one can hardly be called a season, as it is often the case with cancelled shows).
I like those scenes you mentioned as well. I'm curious if you have a favorite episode from season 1. Personally I loved the pilot (the office scene where David and Maddie first meet and the one where they are tied up in Maddie's kitchen are terrific) but I also loved "Gunfight at the So-So Corral" (especially the scene in the alley outside the seedy bar) and "Read the mind...see the movie". Too tough for me to choose a favorite, I'm afraid.
I told you it was worth it to purchase the show on DVD and I'm glad to see you are happy with buying them. You're in for a fun ride and I envy you; I wish I could wipe the memories of the show from my mind so that I could experience it again for the first time.
P.S.: IMO Bruce Willis is at his absolute best when doing comedy, much better then the tough guy action roles that would later define his career. It's a shame he doesn't get cast in roles like David Addison more often.