Thanks for your help in pointing me in the direction of Piperade! Although I did not end up taking my business colleague there (he preferred to go for Chinese, so we went to Chinatown instead), I took myself there for dinner one night and had a great time. I wound up sitting at the bar, and had three of their "small dishes" as my dinner (the stuffed piquillo peppers, sheep's cheese and ham terrine, and the prawns) along with a torrone mousse cake and thoroughly enjoyed it. Thanks for the tip.
Other places that I enjoyed very much were Eos on Cole Street, Yuet Lee in Chinatown, Chow on Church near Market, and Dol Ho for dimsum. I also made the requisite visit to In-N-Out Burger for a double-double. Great visit (though it was so hot for much of my time there!).