missing episodes?????????????????

I don't know if anyone has noticed the missing episodes that have not been recorded on the full dvd series, season 1, season 2, season 3, season 4, season 5, season 6, season 7, season 8 and the final season!

One of the obviouse episode I found missing is when Niles and Daphne got married!

If anyone knows the answer as to how to get these I would greatly appreciate it!

I love this "sit-com" more than anything I have ever seen...!!!

Thank you