Always interesting looking at other peoples suggestions for the same thing. I thought I'd do a quick review... all IMHO... and by the way I don't like to pay for something I can get for free.
Locale - NOT Free = NO WAY, interesting app, but way too much money when I can do what I need to with free apps.
Bedside (Night Clock) - Not Free = I don't use a bedside clock, and HTC has a bedside clock built in... I guess it might be useful if I needed this at different times.
Ring Scheduler - Free = very simple to setup, silent will work for night.
Timeriffic - Free = very interesting, it does a few more things including Airplane mode (saves battery at night), Wifi control and a few other things... worth checking out.