When Toofer replies ("... if you're nasty") to Jenna's request to be only addressed by the names Janis or Ms. Joplin, he references Janet Jackson's song "Nasty". It contains the lines: "No, my first name ain't baby / It's Janet - Miss Jackson if you're nasty."
When Liz looks at the schedule for the retreat she's at, one of speakers is listed as D. Scardino. Don Scardino directed multiple episodes of the show.
The sign in the lobby of the conference reads: "Six Sigma Retreat to Move Forward," "Keynote Address: Jack Donaghy," "Evolving User-Centric Deliverables: ROI Informations Schemas And You." (the typo in the presentation title, was present on the sign)
Frank's t-shirt is a parody of the popular "What Would Jesus Do?" merchandise, which is often abbreviated "WWJD". The shirt replaces the "J" with a hockey mask, popularized by the horror movie villain, Jason. So instead of "What Would Jesus Do?" the shirt reads "What Would Jason Do?"