Crema di Balsamico
I have found most balsamic vinegars to be too lame -- until I found Acetificio Emiliani, Crema Gastronomica Balsamic Cream. Originally, I purchased a bottle at the Cheese Shop of Beverly Hills; it was about $20 at the time. Then, I found it for about $7 at the Eagle Rock Italian Bakery:
If this interests you, call ahead to see if they have it.
Eagle Rock Italian Bakery
1726 Colorado Boulevard in Los Angeles