For some strange reasons, Studios thinks R2 people buy more TV series and release them way before R1. Apart from X-files, Star Trek & Sex and the city, R2 have more earlier release date for TV series. And there a some that's not even on R1, strange.
You can get ALL the Friends episodes on DVD here, from the beginning to present, where R1 only get "The best of"
Fraiser's First series is coming out next month
Buffy season 4 is out in May
Angel Season 2 is out also in May
Ally McBeal is starting to be release on DVD
But all these boxsets cost a fortune!, Buffy & Angel boxsets cost £70/$100 each!