5. Star Trek: Enterprise (2001-2005)
4. Star Trek (1966-1969)
3. Star Trek: Voyager (1995-2001)
2. Star Trek: The Next Generation (1987-1994)
1. Star Trek: Deep Space Nine (1993-1999)

1. Star Trek: Deep Space Nine
2. Star Trek
(tie) Star Trek: The Next Generation
3. Star Trek: Voyager
4. Enterprise

I only watched the original Star-Trek from the 60's. Are the other ones as
good as the original?

1. TNG
2. TOS
3. DS9
4. VOY
5. ENT

#1.The Original Series
#2. The Next Generation
#3. The Animated Series

I've never seen the others so I can't rank them at this time

I've known them all about the same time or at least every few months,

TNG-VOY, almost the same week
TOS shortly after, one or two months after
ENT 1 month or 2 after TOS
DS9 not remember but a few months after Ent

I've seen them all so close because when I knew Star Trek was already 2004!

1. Star Trek
2. Star Trek the Next Generation
3. Star Trek (Cartoon)
4. Star Trek Voyager
5. Star Trek Deep Space Nine
6. Star Trek Enterprise

Mine would be:

1. Star Trek
2. Star Trek:Deep Space Nine
3. Star Trek:The Next Generation
4. Enterprise
5. Star Trek:Voyager