When Jessica and Luke are talking on the balcony, staking out Zalk Labs, the skyline of New York behind them features Avengers Tower; this is a rare direct reference to the MCU films.
When the fire truck pulls up outside Luke's bar, the Engine Company number is listed as 99. 99 is the Engine Company featured in Rescue Me (2004)
The original title for this episode was "AKA Jewel and the Power Man".