I have the old all that seasons 1-2 complete on dvd although, 4/5 of them dont have the whole musical performence. I have ALL of the skits though! I also have 1 episode from seasons 3 and 1 episode from seasons 4 and 1 from season 5 and the 100th episode special.
Let me know if you are interested!
Nickelodeon just doesn't show it anymore!!!