Mike Selliti (Michael Lombardi) was named after co-Producer Tom Sellitti.
Tommy Gavin: What?
Angie: My ex. He's outside. I can't believe it, this guy won't let it go!
Tommy Gavin: How did he even know we were here?
Angie: I told you he follows me around.
Tommy Gavin: All right. I'm gonna put an end to this right now.
Angie: I'm telling you, Sebastian's crazy!
Tommy Gavin: His name is ...
In Season 2, when Tommy is supposed to be working at a firehouse on Staten Island, the Engine number is 3xx. House on Staten Island are 1xx. 3xx would be located in Queens.