In "Adventures in Housesitting" Frasier also walks up and pets Satan when Woody has him in the bar.
Frasier says he's scared of dogs. However he wasn't in previous episodes (he even owned a dog, Pavlov, in "Diane's Allergy"), and he isn't scared of Eddie in Frasier.
Frasier: Two grown men settling a rivalry by throwing a little white ball at a wooden stick. How pathetic. Now boxing, that's a man's sport. Punch a guy in the face and scramble his brains. That proves something.
Norm: Fraze, you're really coming around buddy.
Frasier: Thank you.
Norm: Fraze, how about you? You want to play with the puppy?
Frasier: My mother never allowed me to have a puppy when I was a boy. Consequently she instilled in me a slight fear of animals.
Carla: We're going on an airplane, and maybe while we're up there, we'll see that pitch you threw to Dutch.
Frasier: Norm, I think Spotty wants to buy you a beer.
Norm: Good Boy Spotty!!
Carla: Hey guys did I miss anything?
Norm: Sam hasn't started yet. Where've you been?
Carla: I've been visiting the other team. Ran into somebody I used to get hot and sweaty with.
Norm: Who's that?
Carla: The other team!
Sam: There's only one thing missing. Where's Coach?
Carla: (speaking of Coach spiritually) He's here, Sam. Here's here.
In the scene where Sam and Carla are alone in the dugout, Sam is excited about being back in the same. He says there's only one thing missing, as he asks, "Where's Coach?"
Actually Bogart never said "Play it again, Sam" in Casablanca. It is not said by anyone in the movie. "Play it Again, Sam" is a Woody Allen movie.