The "Cling Free" commercial featuring Jenna as a child is an actual "Cling Free" commercial from 1981, with the real Jane Krakowski. She was approximately 13 years old when she did that commercial. The full commercial can be seen on YouTube.
The certificate that Liz receives from human resources after her suspension reads, "This certifies that Elizabeth Lemon is no longer a Workplace Sex Criminal."
When Jenna becomes the topic of a scene, one can hear her song "Muffin Top" played on tuba.
Frank's trucker hat says "Constant Craving".