If I was to be killed by science-fiction villains, I'd rather:

that's basically what marriage is, without the luxury or skill part, and the fucking not as frequent

urban & hollywood legend. your guts won't flow out of your abdomen, you won't freeze, your eyes will not pop out, blood will not come out your orifices.

instead, says NASA scientist, "expect to fart a lot".

A human can survive hard vacuum for a short time, 60 to 90 seconds.

I would have to go with the Python's "Meaning of Life" method of execution.

http://www.youtube.com/watch?v=MLctf4o6feQ [youtube.com]
(NSFW)
You may have to watch this over and over to really appreciate the subtle nuances of the dialogue and cinematography.
Turning down the sound helps - as does slow motion.

I also kind of stunned that no one already mentioned this one.

I've found the key with most women's sexuality is simple. They are material creatures, so, it isn't what you give them, but what they feel like what they eventually can wrest from you financially that gets you a good time that night versus another night on WoW.

Lead them along, and you will get quite vibrant sex. However, the second they think they are not getting a new diamond ring or car, they will ditch you in milliseconds for someone else.