What are the strategies for allowing yourself to enjoy a poem?

If you're reading it, try either reading through the words aloud (even if it's very quietly) or hearing them in your mind; try to find the rhythm and fall into it. Once you find it, read the lines to the rhythm, and they become more like a song than just words on a page. Also, if you're reading something Shakespearean(or with similarly obscure language), I usually find that it's better not to read the accompanying definitions/explanations until after the first time you read the work. They interrupt the flow and make it too much work to read. (Also, sometime's it's fun to pick up on the allusions in the piece on your own, without having them spoiled for you before you even get to think about them. =P)