Question about using Linux on the PS3

[markw]

I've been interested in trying out Linux for quite some time and may do that on one of my Windows PC's but now that I've heard the PS3 can run it I'm interested in doing that. I know Logitech makes a couple keyboards for the PS3 so I may get one of those. I just have several questions.
Logitech has a wired keyboard and I can get a wired mouse but would the wireless keyboard/trackpad combo work?
When I install Linux can I have the PS3 still boot up straight into the startup screen and just choose Linux when I want to? I use the PS3 a lot as a dvd/blu-ray player and of course for games. I don't want installing Linux in any way to hurt that.
Which route should I go? I've heard many distributions run on it but seems Yellow dog is the closest to an 'official' release
Is Sony going to come out with their own distribution eventually?

Thanks for any help/advice.