A is for Animal things. Wesley was killed by them. He got better.
B is for Bob, Gillian Taylor's co-worker at the Cetacean Institute. He was a son of a BITCH!
C is for Gary 7's shape-shifting cat, Isis.
D is for Denobulan Breakfast Sausage.
E is for Enterprise, the first space shuttle developed by Earth.
F is for ferry, what the Enterprise does for diplomats and refugees.
G is for the Gorn Hegemony, the interstellar nation-state of our fine, hulking lizard friends.
H is for Horny Starfleet Captains.
I is for Ilia's bald head.
J is for Jamaharon.
K is for the Klingon Defense Forces, the military and exploratory branch of the Imperial Klingon government.
L is for Louisiana, birthplace of Ben Sisko.
M is for Moon. Vulcan doesn't have one.
N is for Nomad.
O is for Organians. As high above us on the evolutionary scale as we are above amoeba.
P is for Pakled spaceships, a mishmash of parts and technology from different species always in need of maintenance.
Q is for Quasar-like phenomenon.
R is for Reegrunion. One of the most wanted criminals on display in Odo's office on DS9 was a Reegrunion.
S is for Spock's afro comb.
T is for Thomas Paris. Call him Tom. Everybody does.
U is for U.S.S. Enterprise.
V is for Varon-T Disruptor.
W is for the Wambundu-class starship. It was mentioned once but never, ever shown.
X is for Xindi Reptiles. They want to kill all the humans.
Y is for Yominium Sulfide.
Z is for Zetar. Where all corporeal life was destroyed millenia ago.