For those that missed it, Paul put on a show at Abbey Road studio's for a small audience that was videotaped and shown on PBS as part of their Great Performances series. I'm pretty sure that it was done in Studio 2, which is the one the Beatles used. It's not the largest studio at Abbey Road, but it's big enough to hold a small orchestra.
Paul played several new songs, as well as some old numbers, performing little snippets of other songs here and there. Nearly everything was just him playing either guitar or piano, but it was much more than just a music performance.
Highlights for me included:
The demonstration of multi-track recording (using an old 4-track recorder!) where he recorded sound created by rubbing the top of wine glasses, and a harmonium, and then sang the intro to Band on the Run
The performance of Lady Madonna with piano and new arrangement
The "Elvis Bass" performance
And at the end when he did another little multi-track example using a digital recording system.
There were a lot of other great things about the show, and I really wish it was another hour long! I'm hoping they'll release it on DVD; hopefully with additional material!