What can I say about Oakmont Bakery that hasn't already been said? Its a classic with a lot of great options.
We tried the Oakmonter Dolce and two petit fours.
The Oakmonter was good. (The Oakmonter is cheesecake and dark chocolate cake with fudge icing in between). While it was decadent, I found the cheesecake to be really dry and crumbly. I prefer a soft, creamy cheesecake and this was disappointing. I appreciate that OB offers "dolce" sizes for many of their cakes as this let us try more things.
The petit fours are enormous! We had both vanilla and chocolate - both were quite good.
Should you go to Oakmont Bakery? Absolutely. Is it the best bakery I've ever been to? No.
Go in expecting a line. And if you truly want to see all of the options you will have to get a little pushy to get around the crowd. While you don't want to be rude, remember that the cake is worth it.