Events of this episode take place during the second week of December 2004, but Tru's phone display, 35 minutes into the episode, reads the 29th of January 2004.
When Harrison is leaving Tru's apt after saying thanks for the hat. He opens the door as she's saying bye Har. He turns around she says oh sorry. Harrison is again opening the door to leave as he says not funny.
Just as Tru and Jensen are leaving the clinic, there is about half a second clip of Eliza Dushku posing comically with her lab coat in hand.