I'm aware of the default calendar option, where you can create recurring alarms. It's kinda boring though. :/
Then there's BBSmart Alarms Pro which was just fixed for compatibility with the Bold. I hear great things.
I used to use MyAlarm, but the developer stopped updating it long ago. :(
I'm sticking with the default app for now till I decided on something worth installing.
So, what do you use?