Absolutely! A great series.
I have the first 3 seasons on DVD and have watched - for the most part - the first two. The only problem is that my wife and I have seen the episodes so many times - and fairly recently - that it's as if we have them memorized. So, we skip a number of them while going through the DVDs and focus on the ones that don't seem to air as often.
There is one other issue. I believe that the first two seasons include only the edited, syndicated versions of the episodes. I believe that starting with season 3 they advertise the "full and uncut" episodes. Wonder if they'll re-release S1 and S2 uncut?