I don't know the east bay that well, but there are tons of awesome Mexican places all over the South Bay and Peninsula (not to mention that SF is mission burrito mecca) so I would imagine so. There are places all over the bay to hike and enjoy nature too. The coastline is obviously gorgeous, you have awesome forests north of SF, trails and stuff all over north SF and the South Bay, so there's variety, but all of it is pretty great.
http://en.wikipedia.org/wiki/Pleasanton,_California
http://www.weather.com/weather/today/USCA0882:1
Those and Craigslist were most of the research I did just to understand where I was moving and what housing was like and that kind of thing when I moved out to the bay area. You can use walkscore.com to kind of judge what's nearby places that you're looking at and get an idea of what kind of food and stuff is around. Yelp too. I don't know if you can find a better mixture of food, scenery, and shit to do anywhere else in the country.