30 Rock

Of all the singers who participated in the "We Are the World" parody, only Cyndi Lauper actually performed in the 1985 USA For Africa hunger relief song.

Jack gets Elvis Costello to agree to the concert by telling him he knows he's really, "Declan MacManus, international art thief." While he's not an art thief, Declan MacManus is actually Elvis Costello's birth name.

We learn Clay Aiken is Kenneth's cousin.

We learn that Liz Lemon went to grade school with Sheryl Crow.

It was revealed that Tracy's 39 years old, and Toofer's 33.

Frank's trucker hat reads "Mute Button"

Frank's trucker hats read "Crop Octagon" and a blond-lettered "Carpet" atop black-lettered "Drapes" (i.e. 'carpet and drapes don't match')

Frank's trucker hats read, "Space Gravy", "Flowers", and "Fedora".

The Cling-Free commercial that shows a young Jenna Maroney during her tribute special is an actual commercial that actress Jane Krakowski did for the same product in 1981.

This episode confirms Jenna's age as 40.

Frank's trucker hat reads, "Game Changer", as well as wearing a blank hat.

Frank's trucker hat reads, "Laser Disc".

Frank's trucker hat reads, "Drapes"

Frank's trucker hat says "Reverse Pendulum"

It's revealed that Dotcom's birthday is September 21.

We learn that Frank is a SUNY graduate and has completed one semester of law school at Fordham.

We learn that Tracy Jordan was born inside Yankee Stadium, and he hasn't a birth certificate, so his age and birthday is unknown.

Frank's trucker hats read "Incompl te" and "Two Fare Zone"

Frank's trucker hat reads "Emotional Friend".

When Liz shows Jack a picture of the very attractive Dr. Drew Baird, Jack snidely wonders aloud if the attraction Drew has for Liz is because he is a "Bundy-esque serial killer", referring to Ted Bundy, who's good looks were a focus when he was discovered as a serial killer in the 1970s. Later in the episode, as Drew's mother lay dying, she tells Liz that she must tell Drew that the woman he believes to be his sister is actually his mother. This is likely another Bundy reference, as he was made to believe for many years that his grandmother was his mother, and that his actual mother was his sister.