Solution: Three quick shots of whiskey and one of those ring-the-bell-win-a-prize carnival mallets.
No, no, no, that's terrible! I'm kidding. Kidding! The solution is , a site that lets you send gentle but helpful criticisms anonymously.
All you do is pick a category (Appearance, Personal Hygiene, Office Behavior, etc.), choose a canned message from within that category, and then provide the person's name and e-mail address.
Presto! Your criticism gets delivered, the offender adjusts his or her behavior, and the world becomes a better place. All thanks to you.
Seriously, I think services like this are great for dealing with awkward situations in a harmless, non-confrontational way. And, yes, a NiceCritic message may cause hurt feelings, but I'd certainly want to know if my behavior or actions were bugging someone. (I'm really considerate that way. Modest, too!)