What are the best mnemonics to remember important short cuts?

Spotlight:
I've heard it remembered as 'space command'. Like you're the commander of a futuristic spaceship and you're talking to the computer, asking it to look for something or open something.
You're commanding the space ship. Press command-space to access Space Command.

Of the most commonly used keyboard shortcuts, I've found that most new users find the ones for "cut" and "paste" are the most difficult to remember. Not difficult, though, if you think of the "X" for "cut" as a pair of scissors, and "V" for paste as "viscous".

But blindingly funny ones? Hmm, you've stumped me there...