A is for Armin Shimerman, who played Quark for all seven seasons.
B is for Bashir, Julian - CMO of DS9
C is for Constable Odo
D is for Damar and his love of kanar.
E is for Ezri, the latest Trill host for the Dax symbiont.
F is for Ferengi episodes. Many of which were great.
G is for Gamma Quadrant