Like Rory said, Nike Frees are the heat. I have fallen in love with them... I mainly got them for weight lifting/CF as I like being lower to the ground and I tried running in them and they felt great.
I have tried on some of my other shoes but they all feel so, cumbersome and just huge, I cant stop wearing these things.
I have the 7.0 running shoes right now but I plan to get a pair of 7.0 trainers and a pair of 3.0 running shoes once these start to wear out.
I am looking for a place to try on a pair of Vibram Five Fingers as I think I could become addicted to them too, we will have to see.