Woody tells Mary that his birthday is July 23rd. This is the actual actor, Woody Harrelson's, real date of birth.
The title comes from the "Mark Twain" (Samuel Clemens) novel Pudd'nhead Wilson published in 1894.
The first time Lilith Sternin appeared in two episodes in a row, following the prior week's episode inclusion of her character.
Frasier "going Caribbean" is ironic considering that Kelsey Grammer was born and partially raised in the US Virgin Islands.