I'm a huge Raiders fan. Don't really like the warriors all that much though. I really only like the Oakland Raiders, Portland TrailBlazers, and the Oregon State Beavers. Not a fan of baseball really. If I root for anyone it's the Mariners or Yankees.
I'm an A's fan and Billy Beane fan, though I've been disappointed the past few years. I love the Sharks as well, and their entire business-front office side is amazing since the ownership change.
I like all the bay area teams. Different conferences so why not? I'm even for the San Jose Sabrecats.