I have always loved the idea of time travel and while a blow to the head can create a time travel story just as good as the far cooler images. It is also far easier to believe that someone could travel in time through some type of a machine even if we know that it is unlikely. Here are images of some time machines.
This last image is my favorite beacuse it is the Large Hadron Collider. This likely is not a time machine,but there is some theories that this may allow time machines. Here is an article that looks at the possibility that it could send matter backwards in time. There is also a story of a strange man appearing claiming to be a time traveler. You may want to consider that these articles mostly appeared around april 1st.