The picture that Earl puts on his desk is from the episode "Joy's Wedding".
While the gang is working at the office building, we see Darnell (Crab Man), pushing a mail cart and handing out office supplies. This is what 'Eddie Steeples' did during a highly popular commercial for OfficeMax.
The song playing while "the gang" is casing (and robbing) the jewelry store is "Outa-Space" by Billy Preston.
Earl completes the following item(s) on his list in this episode: - #159: "Stole P's HD Cart".