First post.  Yay!  No one mentioned "Dark Angel."  My God that show had so many hot guys on it.  And Jessica Alba is goddess.  I'm gay, but that's one pussy I'd eat out w/o question.
I miss "Charmed," but it was obvious they were running out of new material.  I thought Ephram on "Everwood" was soooooo cute.  This whole WB-UPN merger fucked everything up.  No one ever watched UPN anyway.  Why whould WB want to merge?  
I miss "Grounded For Life."  I also hate Cartoon Network for not airing the last season of "Sailor Moon."  They're totally fucking up "Naruto" with the crappy voice acting.  I always say Cartoon Network is where anime goes to die.  And UPN is where good shows go to die, i.e., "Buffy."  
I think I'm done ranting, but I really miss "Daria," because I wanted to grow up and be exactly like her 

.  
The first season of MTV's "Undressed" with the Joel and Andy gay story arc actually gave me the inspiration to accept myself as gay, and it's sad that kids don't have that kind of representation on tv anymore.  
"Will and Grace" ended in a timely manner.  Hell Will was like 44 or 45 at series end and had only been laid like 4 times in 8 years.  But I miss that drunken ho, Karen.  
Anyway, to all the fallen shows, I salute you, and assure you that you are missed.
(BTW, X-Men: Evolution sucked ass.  The X-Men cartoon that was on Fox in the mid-90's kicked so much more ass!)