Comments pet peeves # 1:
People saying "to be honest" when they're just expressing their opinion. "To be honest" doen't mean "I will now state the undeniable truth" or "everyone knows this but only I am willing to say it." In the strictest sense, it means "I'm not lying." Saying it implies that when you do not, you may be lying. Normally the phrase is used when someone is adept enough at critical thinking to voice considerations that are at odds with their opinion, it could be stated as "if I'm going to be completely honest with myself, this must be considered."