You must download and listen to this podcast about time.
It talks about time dilation, and relativity.
The hummingbird and the tortoise experience time differently than we do. Oliver Sacks (the Neurologist who the movie Awakenings is about) tells about his patients who have also experienced radically different universes of time. One example is a guy who at times moved so slowly that he appeared to be frozen in place – but when he was asked about it later, he had remembered time moving at a normal rate.
Seriously download it, it has a lot of really interesting things. Also available on iTunes.