Walter listens to The Man Who Sold the World by David Bowie. David Robert Jones aka Mr Jones served as a principal antagonist throughout this show. David Robert Jones is David Bowie's birth name.
The team breaks into a Kelvin Genetics lab. 'Kelvin' is a name featured in many J.J. Abrams productions, because Kelvin was the surname of his maternal grandfather.
The coded glyphs at the commercial breaks spell TRUST.
As a continuation of the series in-joke, Walter (John Noble) calls Astrid (Jasika Nicole) "Agnes."