My ones:
Star Trek (in order of writing per race):
Cannon:
Ent: Fed: the Warp Delta; Rommie: BoP; Klink: Raptor; Andorian: Kumari; and Vulcan designs (all)
TOS: Fed: Definetly the Connie and the Daedalus; Rommie: BoP; Klink: D-7
TMP: Fed: Connie refit, Excelsior/Ent-B, Miranda, Oberth (these two are a different basic design phylosophy than the Enterprise-line ships - saucer, neck, sec. hull), Constellation; Klink: D-7/A, BoP; Lyran and Hydran ships
TNG: Fed: Galaxy, Sovereign, Defiant, Akira, Norway, Sabre, Steamrunner, Nova, NX-01 Dauntless, Cheyenne, Freedom; Rommie: D'deridex, Norexan (Valdore); Klink: Vor'cha, Negh'var; Dominion ships; Reman Scimitar (ain't your casual ship, she's detailed like hell); Cardie: Hideki (nice shape)
Post-Nemesis: Wells class (wild shape), Aeon class
Non-cannon:
TMP: Fed: Atolm's JTK, WZ's Doohan and Relentless, Ulyssess, Joshua; Rommie: Firehawk
TNG: Fed: Dj Curtiss's Schumann, Supremus, Victory, WZ's Titan (both versions), LC's Titan, MayhemUK's Courageous, Queball's Repulse, Orus Class, Insignia class, Legacy class (Titan design), Andrew Probert's Ambassador study, BC2 Concord, Scorpions, Nebuchadnezzar; Rommie: Kerchan, Atolm's Falcata and Aen'Stelam, BC2 D'voridex and D'deridex
Star Wars:
Venator SD, X-wing, TIE interceptor, Grievus's Command ship, Mon Calamari cruiser
BSG:
Battlestar, Basestar, Viper fighters
Space Oddisey:
Leonov
The Last Starfighter:
Gunstar
Robotech:
SDF-1, VF-1J
Farscape:
Moya/Talin
Stargate:
Goa'uld Deathglider
Designs I despise: ST Fed Ambassador class (blocky!), SW Ep5-6 SD, SSD.