Oh, Hey
During Season 8 Episode 4: Out on a Limb, something rather funny but embarrassing happens. After Jack leaves Terri in Miss Fitsimmons to set out to distract her. You can see that as Jack is closing the door, you start to see stoop down and crawl past the window in the bushes.
About That Number
When they show the filming of the series finale, Terri turns off the light and closes the door to apartment 201. However in the movie, Jack turns off the light and closes the door to apartment number 291.