Besides PAL, I also work as an SM (security monitor) at Unit 3. That's right, I'm the strict lady that makes sure no shady people get into the dorms!
I also volunteer at First Presbyterian's bi-monthly Street Meal. Volunteers help cook massive amounts of food and then serve it to the homeless and hungry. It's a great way to serve the community and you get to have interesting conversations with the diverse population of Berkeley.
I'm also part of a Christian fellowship on Campus called ICA (formerly known as the Navigators). We have weekly bible studies in a small group setting as well as larger meetings where everyone comes together to learn and fellowship. I attend church as well at the Berkeley Mosaic, where I will begin work with the children: either taking care of those in the nursery or teaching Sunday school to the older kids.
These extracurriculars are what really make my college experience complete. School is great, but I learn the most in situations and experiences where I can't rely on academics for the answer. So I encourage you, if you haven't already, to join a group or find an internship. You'll gain a lot of valuable experience, and if nothing else, something to add to your impressive resume.