OK, so you made me pull out my old pix to remind myself...

Florence (Firenze)
1) Medici chapel

Pisa
1) Cathedral has stunning statues and paintings behind the altar.

Lucca
1) Make sure to try the Lucesi (spelling?) wine. Best (and cheapest) wine I had there. I'm more into med bodied reds to give you an idea. Barolo's and barbarescos are also fantastic.

Motelpulciano
Pretty cool, small, hill town, great reds.

Assisi
In addition to the St Francis Basilica, there's also a little chapel called the Temple of Minerva. I thought this had some of the best art outside of a museum in Italy.

San Gimignano is the spelling...