Computer Operation, Computer Hacking, Machine Operation (scanners), Electronic Bypass and a vehicle skill of choice are heavily utilised in my game. Perception beats them all in the popularity stakes. Stalking & Hiding gets used by those who have some. Likewise Acrobatics, First Aid, Tracking, Demolitions, Signaling, Engineering: magnetogravitics. Appraisal has been used once - assessing the value of an interstellar frigate while posing in the El Dorado system as arms dealers for Khayyam.
Best wishes,
Nicholas