I've become a huge fan of Jools and his Big Band after fist seeing them live 5 years ago. Since then, my sis and I have been to see him live every December - it's become a wee tradition now!
He immediately gets the audience clapping, tapping their feet or up dancing as soon as he starts playing and interacts with them, getting a bit of audience participation going too! At the end of each gig, we all join in singing the same song year on year, which leaves you hungry for more. He always finds great supporting artists, whether it's his old mates from Squeeze, or relatively unknowns. His guests have included Lulu, Solomon Burke (remember 'Cry To Me' from Dirty Dancing?!), Eddi Reader and this year's fabulous surprise guest, Marc Almond. Ruby Turner always tours with him too; she has a phenomonal voice and again, has the audience up dancing and joining in.
If you love Jools but have yet to see him live, go see him on his December tour - you won't be able to stay seated!

I saw him at The Albert Hall and he was Great!!!!!!!!!!

I, too, saw Jools Holland at Picnic in the Park last year, with the fabulous Ruby Turner.  Despite the rain, he had eveyone on their feet dancing.  I went because it was Picnic in the Park, not because of JH.  However, I would now go out of my way to see him perform again. Really good!

I saw Jools Holland last year at the Picnic in the Park - he is just brilliant. Now I have tickets to see him at the Albert Hall in Nov 08 and I can't wait -  definitely worth seeing.

Saw Jools and his Big Band in Aylesbury, May 2008. It's a small venue for Jools so we were able to stand within a few feet of the stage.
He and his band are just fantastic. What a fabulous evening we had. I'd travel a long way to see him again.
I had no idea his music is as versatile as it is. As for boogey-woogy - he has to be the world's best!