More events
Underwater steeplechase: see how quickly a contestant can perform underwater feats like loosening a hatch, dragging a body, or freeing equipment while swimming past obstacles. Think Sphere or The Abyss.
Security Hacking: from Stargate to Mission Impossible to Star Wars - not to mention any number of games, no sci-fi flick is worth its salt without the technical specialist - whether it's Carter/McKay or R2D2. Give them an iPad and see how long it takes them to crack the password to a door or hack into a critical system.
Improvised combat. Think Road Warrior or MacGuyver. Any way to non-lethally take out your opponent based on materials at hand. Bonuses for extravagant contraptions, distractions, and Rube-Goldberg machines.
The Maze. No spaceship is complete without "Jefferies tubes", and navigating them is truly an Olympics-worthy task. Bonuses for repairing the power conduit.