This is the first live action appearance of Bibbo Bibbowski. He was a supporting character in the "Superman" series of comic books who also owned a bar.
When the clone-Lois was looking for Red's Dockside Plumbing in the Yellow Pages, the ad just above it was SGRICCIA Plumbing and Heating. Philip Sgriccia is a producer.
After Lois gets hit in the head, she thinks she's the lead character in her novel, Wanda Detroit.