While testing Piper's powers, Mia compares her to Magneto. Piper asks "what's a Magneto?" This is the exact thing Hugh Jackman's Wolverine said in the first X-Men film.
On the fridge behind Donald Faison is a crab and below that is a picture of a starfish. Possibly a nod to Mr. Krabs whom is played by Clancy Brown on Spongebob Squarepants and is playing Ed/ Grandpa on Emergence.