Due to scheduling conflicts, Kristen Bell (Veronica) and Amanda Seyfried (Lilly) couldn't be on set at the same time to film their scene together. Amanda was busy filming Big Love (2006) and Kristen was filming Fanboys (2009), so stand-ins were used to film their parts during the other's lines.
The scene where Logan (Jason Dohring) holds Veronica (Kristen Bell) as she lies over him on the couch after the incident with Beaver (Kyle Gallner), is parallel to episode 2.1 Normal Is the Watchword (2005), when Veronica holds Logan as he is lying over her on the couch after he'd been beaten up by the PCH Bikers.
When Keith (Enrico Colantoni) hands Veronica (Kristen Bell) an envelope as her graduation present, she asks if it's a pony. That's a recurrent theme on the show. In episode 1.7 The Girl Next Door (2004), when Keith proposes to do what normal fathers & daughters do, Veronica asks, "Buy me a pony?" Then again, In episode 2.10, One Angry Veronica (2005), she asks if there's a pony among her Christmas presents.
The first name called during the graduation ceremony is John Enbom, which is the name of a writer for the show.
Among the names called at graduation are scriptwriter John Enbom, co-producer Stacey Fields, and producer Howard Grigsby.