Generally, it seems to fall into a few categories:

• Narration and/or images, maybe with a few binary choices
• Animated scenes with some form of interactivity, like setting tempo
• A set of actions you can choose to perform, which fill a lust meter or similar (sometimes you also spend stamina points, and it can be based on your game stats)

Which do you prefer? Does it depend on the game genre? Are there any presentation styles that don’t fit into the above?