Well, it'd be kind of difficult to achieve now that two of the Beatles are dead, but I guess the propped-up corpses of John and George would still make something of an impression on her.

But my real advice to you--what I think the person who asked this question needs to hear--is that no proposal is "just that good." There's no set of magical circumstances and illegally purchased fireworks that's worth contractually agreeing to bond your life to another person's because "it's just that good."

Anyone who says yes to a proposal because of the proposal itself had better be incredibly lucky or prepared for a brief and awful marriage. I say proposing is like prosecuting before a jury: if you don't already know the answer, don't ask the question. Otherwise all the mariachi singers you invited are going to feel very embarrassed for you.

As far as memorable options, I think it depends heavily on the personality of the proposee. For some people, it's important that the moment be private, intimate, and possibly on a wind-swept mountaintop. For others, it's important that it be on stage in front of a huge crowd so everyone knows how important they are. Both good options.

But a truly great proposal grows naturally out of having a deep understanding of your partner, their tastes, and above all else, whether or not they are interested in marrying you.