Today, I happened upon the original Right Guard deodorant "Hi Guy" commercial - from 1971- on YouTube.
You probably have to be at least forty-something to remember these, but they were quite popular at the time. Hapless everyman (Jim Fiore) opens his medicine cabinet to find loudmouth blowhard (Chuck McCann - in a defining role) sharing it from the other side.
The commercials became famous for McCann's greeting of "Hi Guy!" - although I notice he doesn't quite say it that way in the original.
The "Hi Guy" ads were famous enough to merit the following parody in Mad Magazine (click to make bigger):
