Well, the first thing you should do is look in the "
Great Neighborhood Restaurants" section, where you'll see 29 restaurants the community here feels deserve special recognition.
There are two thai restaurants listed, but add Sticky Rice, Thai Avenue, Aroy Thai, Yum Thai, Thai Aree, and Siam's House to that list. You should be able to have great meals at any of them. Check
http://www.silapaahaan.com for translated menus for the bulk of them.
For French, I like the sister restaurants Le Bouchon and La Sardine, both in Chicago proper, and Hemmingway's, in Oak Park.