A is for Agony Booth. Torture device used aboard the I.S.S. Enterprise.
B is for Breen helmets.
C is for Crosis. One of Lore's evil Borg henchmen.
D is for the Devidian system, where the time-shifting aliens prowling 1893 San Francisco for human neural energy originated.
E is for Enterprise. Let's make sure history never forgets the name.
F is for Fesarius, flagship of the First Federation.
G is for Gamma Quadrant, home of the Dominion.
H is for the holodeck. I want one.
I is for Irradiated. The Delta Quadrant planet encountered by the late 21st century Earth probe Friendship One became this after back-engineering the probe's technology to make weapons.
J is for Jem'Hadar recipe for cheesecake.
K is for Klingon body armor.
L is for Luminous beings.
M is for Malcom Reed.
N is for Nimbus III, home of exotic cat-women dancers.
O is for Ophiucus III.
P is for Positronic brains.
Q is for Quantum discriminator scans of the Xindi probe wreckage.
R is for Redjac.
S is for Starfleet Command, located in San Francisco near the Golden Gate Bridge since before the Federation even existed.
T is for T'Pol's bum. Finally got T again.
U is for United Federation of Planets.
V is for V'Ger from Star Trek The Motion Picture
W is for Winston. Carter Winston. Who turned out to be a Vendorian imposter working as a spy for the Romulans.
X is for Xindi-Mimes. The least popular species, and for good reason.