High Crane Drifter (Season 3) - I have to give this episode some major respect. I was watching this ep. the other day and i was laughing out loud several times.

This is the ep when Frasier has had enough and threw a rude man out of Cafe Nervosa. The calls he got the next day were SO FUNNY.

Roz: We have Mitch on line three. He's having trouble with his
neighbors.
Frasier: Hello, Mitch.
Mitch: [v.o.] Make that 'HAD' trouble. This idiot next door had his
leaf-blower going at 7:00am, again.
Frasier: Oh, that's very inconsiderate.
Mitch: I'll say. That's why I decided to give him an "etiquette
lesson." I grabbed that leaf-blower and smashed it against a
tree.

Chris: [v.o.] ...so I snuck into his backyard and shoved a whole
pound of rotten shrimp into his air conditioner! Come on
summer!

Chuck: [v.o] ...hey, he asked for it. So I put 100 scorpions in a
FedEx package.

Frasier: Who am I to draw the line at the acceptable
level of force? Because the next person moves a little
farther, and the next person, a little farther still until
we finally end up with scorpions flying through the mail
like Christmas bundt cakes!