I have played RPGs since 1981 with a preference for science-fiction RPGs. The first games I started with were playing and running STAR FRONTIERS and CYBERPUNK 184.108.40.206 (R.Talsorian Games), RINGWORLD (Chaosium Inc. games) and boxed (BECMI or Cyclopedia) DUNGEONS & DRAGONS. I also play and run FATE CORE, play TRAVELLER Classic edition, and I want to try some Cypher System games and Powered by the Apocalypse games, and especially start running the latest edition of TRAVELLER (Mongoose Publishing's 2nd edition)!
My special GM skill is Powers of Description. I will describe science-fiction verisimilitude; you will believe you are there. I also try to tailor the game to each player's preferences: combat, role-playing, storytelling (complex story-arcs), political intrigue (if you're too involved with NPCs, they might make you a leader!), whatever.