I've been to several and they keep changing on you. Make sure you check they're in the program the EVENING you dine. I guess I can classify some of these places as "stable" => have been in the program for awhile. I am vegetarian though and so my impressions are colored by only that section of the menu!
1.

Vogalonga (Italian), 22nd St, SF 10mi/$, stable
Not too bad. I'd give it 18 for food on a Zagat scale. Doesn't accept credit. Debit only. Apparently you CAN add debit cards to your profile. Priced moderate.
2.

Zao Noodle Bar (Asian), Univ Ave, Palo Alto 5mi/$, stable
Zagated. Stay as long as you want here. Interesting food. Inexpensive. I must say there are better places though
3.

Shiok (Indonesian), Menlo Park 10mi/$, fairly new
This place was not bad. Reasonable portions. I'd give it a 17 for food on Z
4.
Lotus Cuisine of India (Indian), San Rafael 5mi/$, stable, Need to reserve before you dine to get credit.
Excellent. This is my favorite Indian (well, North Indian) in the Bay Area (and I AM Indian). A little expensive for the category but worth it. Zagated at 22 for food I think which is deserved.
5.

1/2
Al-Masri (Egyptian), Richmond Dist, SF 10mi/$, unstable, Is open almost only weekends (check their web-site). iDine keeps saying they're quitting "this month" but that's every month for the last 3

Excellent. They claim to be the only authentic Egyptian in SF. Very good food and large portions. Offers 3/4/5 course menu options. Belly dancers nightly.
6.

1/2 Acorn (Mediterranean), Menlo Park, 5mi/$, stable.
Very good. A little expensive but has a good wine list and interesting food.
Worth a dine.
7.

Massimo's (Italian), Fremont, 7.5mi/$,
Average. Very good service but the food was nothing to write home or FT about.
8.

Savanna Jazz (African), Soma, SF, 5mi/$, unstable
Good French/African food. Limited vegetarian options. Live Jazz music. Good for an interesting evening.
9.

Greenroom Comedy Club (Italian), North Beach, SF, 10mi/$
lacklustre. You can have dinner at Tre Fratelli through the show. The food, ambience and show are sub-par. Maybe if the headliner happens to be someone interesting, this place would be worth it.
10.

Khana Peena (Indian), Berkeley 20mi/$ (I think only 1 of the 2 locations offers miles)
Average Indian food. Extremely cheap. Good for a quick stop.
11.

Mio Vicino Cafe (Italian), Campbell 10mi/$ (incl Fri!)
Good Italian. Friendly service. They stayed open till we got there on request.
12.

Rasoi Fine Indian (Hayes Valley), SF 5mi/$
so-so. There are many better options, esp in the city (might be excusable in South Bay

). Friendly service though.
13.

1/2 Patxi's Chicago Pizza, Emerson St, Downtown Palo Alto 5mi/$
Average Pizza. Some may like it better than I did
14.

Tahini Grill (Mediterranean), Napa 10mi/$
Good mediterranean food, with lots of middle-eastern influence. Good local wines too.
15.

Shimla (Indian), Foster City 10mi/$
Pretty bad, cheap. Samosas were passable
16.

Tandoori Oven (Indian) Campbell 10mi/$
Not a bad place for a quick bite but it's in the middle of a mall.
17.

Antonella's (Italian) San Jose 5mi/$ stable
Good food and ambience. I think it's very near the Egyptian museum.
18.

1/2 Rose & Crown (Downtown Palo Alto) 10mi/$ stable
Pub fare for Stanford. I think they have trivia nights on Tuesdays or something!
19.

De Afghanan Cuisine, Fremont 10mi/$
Interesting Afghan food. Service is a little sloppy. The place looked empty but the food wasn't bad actually.