How you ask a man to do something makes all the difference. Women think that a subtle nuance or slight turn of phrase will have no effect whatsoever on the resolve of their mucho-macho muscular moron. It does! Which is why you should always use "would you" and "will you" instead of "could you" and "can you". For example:

• Do say: would you please take out the garbage?
  Do not say: could you get off your big butt and do something around here? What am I, the maid?
• Do say: would you like to go out to a nice dinner Saturday night?
  Do not say: could you please take me to any restaurant that doesn't have the words "burger", "king", or "happy meal" in their advertising??
• Do say: would you mind watching the kids while I take a night off with my girlfriends?
  Do not say: could you, just for one night, watch the kids you helped spawn-that I never get a break from-ever! I haven't seen my friends in so long we wear name tags to identify ourselves.
• Do say: would you take me to a movie this week?
  Do not say: could you prove to me you're not Velcroed to the couch and actually have the motor skills to take me to a motion picture? Something without Pamela Anderson in it.
• Do say: would you like me to listen to you talk about your day some more?
  Do not say: could you step up the filibuster, Sparky? Jeopardy is on in ten minutes.
• Do say: would you like to take a vacation?
  Do not say: could you move out?
• Do say: would you get out of my life?
  Do not say: could you get out of my life?
• Notice how different these two statements are.
  A man is much more likely to get out of your life if you say "would".