This is going to be the catch all small tid bit thread for things you noticed on a re-listen of the show. While this isn't exactly a small thing I'll start with something posted in another thread which combines Liam's thought and mine...

There's a possibility that Randy was Michael's brother. Kelly describes Michael as not fitting the only child mold early in Season 2 and it may be one of the reasons Michael won't talk about what happened at the Water Works when he broke his arm.