The new tie that Lassie bought was the same tie that Gus wore in the episode "Cloudy With a Chance of Murder" that he gave to Adam Hornstock during the trial to impress the juror.
Melanie Lynskey plays Emily in this episode. In real life she was married to Jimmi Simpson (the actor who played Mary Lightly in several episodes of Psych) for seven years.
At the funeral the tall, blonde, German, male model is chided for being on his cell phone by Gregor's wife by simply calling his name, "Hasenpfeffer". Hasenpfeffer is German dish, rabbit stew.
In "Gus' Dad May Have Killed an Old Guy" (S2E10), Gus tells his parents that he's 29 years old. Therefore, he and Shawn are celebrating Gus' 30th birthday at the beginning of this episode.