Fifth Street Bank is offering a savings account called the FSB Exclusive Savings which offers 5.32% APY on balances over $100. There's no monthly fee as long as the balance remains over $100. Otherwise, there's a $10 monthly fee. Interest is compounded daily and credited quarterly. The bank also has some decent rates on a money market account (4.72% APY) and CDs (5.25% APY 3 to 18 months).
The bank was just established in May 2007, so this likely explains the high rate for a brick-and-mortar bank. It's a small bank with one branch in Las Vegas. It is FDIC insured (FDIC Certificate # 58393).
Thanks to the reader who emailed me info on this bank.