I have installed Ubuntu Natty Narwhal. The new Unity interface is stupidly shit. If you woke up one day and thought, "Gosh, I'd really like to make using my universal general-purpose computer that I can do ANYTHING with feel like I'm using a locked-down phone running an obsolete version of Android through the clunky mechanism some l33t h@xx0r used to jailbreak it, I can't think of a better user experience," this gets you quite a lot of the way there. If you want it to feel a bit more like a computer, log out, select "Ubuntu Classic" and log back in and then you'll only have the Mac ripoff menu arrangements to contend with.
I suspect I'm going to get a BlackBerry 9300 on about £10/mo if I can find that. I've spotted some weird variants of such a plan in the wild.
I am planning to go to the Pembury on Sunday evening. Anyone else?