Question: Is it possible to boot any Linux distros as a live USB on a mid-2009 MacBook Pro (Model 5,3 with OSX 10.6.8)?

I am looking for a way for my MacBook Pro (Model 5,3 with OSX 10.6.8) to boot a live USB of any Linux distro. I was hoping someone here would know a good resource for this. Any help at all would be much appreciated!