Putting Linux on it really isn't as big of a deal as it was at one point. I've only tried with Ubuntu though, for what thats worth.

7.04 was somewhat of a nightmare. Off the top of my head... you couldn't use the normal installation media, graphics drivers had to be installed manually, likewise with sound drivers, likewise with wireless drivers.

7.10 on the otherhand was simple and straightforward. Everything except for the wireless card worked right out of the box. I'm quite happy with it and use it most of the time on my MBP.