Too bad they're going away. I watched those videos religiously when I first started modifying/tracking cars. The mountain road battles were the best - really pointed out the difference between all-out track suspension and fast street driving. Some of the antics were pretty funny too in a typical Japanese TV kind of way. This last video didn't sum up the best parts of the show, so it's too bad. I too stopped watching after the ZR-1 failed to annihilate the pack on the straights.
Still, reminds me of the time when I spent more money on my car than anything else, ate peanut butter sandwiches to afford track time and would cap off an average 12-14-hour day with another 5 hours in the garage, generally joined by a couple friends. Good times.