Steaks: Sundance Steakhouse - http://www.sundancethesteakhouse.com/

Italian: Vito's Trattoria - http://www.vitosnytrattoria.com/

Indian (informal): iChaat Cafe - https://www.zomato.com/santa-clara-ca/ichaat-cafe-santa-clara

Indian (formal): Amber (at Santana  Row) - http://www.amber-india.com/#/home

Mexican: Pedro's (make sure you go to the one in Los Gatos, there's a big difference) - http://pedrosrestaurants.com/

Burgers: St. John's Bar & Grill - https://www.facebook.com/St-Johns-Bar-Grill-244157821091/
(Thursdays they crack open a keg of Pliney the Elder beer, get there early, it goes fast!)

Chinese: Chef Chu's - http://www.chefchu.com/ChefChu/home.asp
(you'd be surprised how many dignitaries have eaten there, reasonably priced)

Thai: Thaibodia (in Santa Clara): - http://www.thaibodia.com/Santa-Clara/Home