I'm a community college transfer student about to finish up my second semester at Berkeley, and I've had a great experience. My professors have definitely been enthuasistic and easy to talk to, and you should have no problem meeting the other students. Just hang out in the physics reading room and you're bound to run into someone from your classes. I had heard horror stories of people waiting in line to speak to their professors during office hours, but this is most definitely not the case. All my professors are really laid-back and have no problem helping you get started on the homework. The graduate student instructors who run the discussion sections are also very helpful. If you can't make it to office hours or discussion sections, everyone is quick to respond to their e-mail. If you're stuck, you should have no problem finding the help you need. I'm not sure if you're coming straight out of high school, but the physics program is pretty intense. Being a transfer student, I've had a hard time making the adjustment to what's expected of me, but now I'm doing fine. To give you an idea of how nice the professors are, my first semester my fiance gave birth to our daughter about 2 weeks before finals, and all my physics professors offered to give me incompletes which I could make up without me even needing to ask. Of course, this means I have twice as many finals this semester! :) I think you'd have a great time at Berkeley, although I know nothing about UCLA. Congratulations, these aren't the easiest of schools to get accepted to!