To Seek Out New Lifeforms...
There were dozens and dozens of aliens, creatures, and new species discovered during the runs of TOS, TNG, DS9 and Voyager (and also, one assumes, Enterprise will likewise discover some "new" species). I'm a big fan of returning to species we meet during the tv shows as a way to both give a sense of place to the Federation ("Gosh, I remember the Brekkans! Uh-oh, weren't they the ones that could zap you with their fingers?"), and to play catch-up with species that were likely left in a new-growth state from the episode in which they appeared.
ANYway, I figured a thread on said species involving templates might be in order. The TrekRPG site has a bunch, and I've sure perused them, but I'm thinking of more "they were on the show" aliens, species, and critters.
I'll post hereafter...
The Doc
So you think, 'Might as well,
Dance a Tango to Hell,
at least I'll have Tangoed at all.'
-- "Rent," Jonathan Larson