When Krazy-8 (Max Arciniega) walks into the restaurant at the beginning he can be seen wearing a polo shirt with a Tampico logo. In Breaking Bad (2008) Season 1 (...And the Bag's in the River (2008)), Krazy-8 tells Walt (Bryan Cranston) he works for his father's furniture company, Tampico.
The second reference to his Breaking Bad (2008) character, Saul Goodman. The first was in the episode Marco (2015).
The phone number seen in the "Saul Goodman Productions" commercial, 505-842-5662, is a working number. If called (NOTE: Long distance charges may apply), a recorded message from "Saul" plays inviting the caller to leave a message.
When Jimmy tells his student filmmakers, particularly Makeup Girl, he needs to "Karloff this thing" as he reaches into her bag, he's referring to legendary actor Boris Karloff, who, with makeup, was transformed into The Monster in the James Whale classic 'Frankenstein'.