The obvious choice is Lt. Com. Data from Star Trek: The Next Generation. Incredibly smart, stronger than a Klingon, superior reflexes — if anyone can help you survive, it's Data. Not to mention it doesn't hurt that he's sexy and can sing. By far, Data is the superior sci-fi companion. Sorry, Spock. (Though you always will be my first love, you adorable Vulcan.) —Jami JoAnne Russell

Deanna Troi — Mind-reader, always good to have around. ''So how does he really feel about me?'' —KTS

I can't believe no one has mentioned ''Q'' yet. Granted, I wouldn't want him for an enemy, but as a friend? Heck, I could have all the blue batgirls, Uhuras and Trois I could ever dream of (not to mention a few tribbles to purr with). —Chuck_A