This might sound complicated, but those who have played the game swear by it.  The Coital Alignment Technique (CAT) supposedly triples her chance of orgasm and gives you a better chance of having the simultaneous orgasm you thought only happened in the movies.

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Have him start in the missionary position, then have him shift his hips a few inches up your body. This gives you a shallower penetration, and the shaft of his penis pushes up against all of your important parts. Resting his full weight on you, wrap your legs around his, and synchronize your horizontal dancing so that your pelvic bone rubs against hers.

Maintain a steady pace and have two pairs of industrial strength earplugs handy for the “Oh my god, oh my god, oh my god, OH MY GOD” finale.