Reflections and photography go together like peanut butter and jelly. Addding a reflection to your photos is one of the simplest things you can do to make the image stand out. Consider these photographs below. They would not be anywhere near as interesting as they are without reflections.
photo by thomasleuthard
In the image above you can see an example of a blurred reflection. In the image below you see yet another kind of reflection:
photo by thomasleuthard
So look for reflections and try them out. Sometimes they add nothing, other times they add a whole new dimension to your image!
Here are a few more examples of reflections in photography.
photo by Axion23
photo by NikosKoutoulas
It’s not complicated, sometimes it’s as simple as lying down on the ground and using a puddle and making it work!
Here are a couple more photos of the Flickr Blog featuring reflections.
Finally here is a video if you want to just make your reflections in Photoshop:
Here is a discussion of this topic:
Video by VistaClues