A veiled reference to My Name is Earl is made in the Raising Hope's pilot, when a newscaster on a the television in Chance family's home mentions that "a small-time crook with a long list of wrongs he was making amends for has finally finished, and you'll never guess how it ended", though no other mention is made.
10/16/2012 Another reference: the nursing home Maw Maw (Cloris Leachman) is in was named Earl J Hickey Memorial Nursing Home.
In the episode "It's a Hopeful Life", Jimmy's friends are standing outside the theatre and there is a movie poster of My Name Is Earl behind them.
Jason Lee (Earl), Jaime Pressly (Joy), Eddie Steeples (Darnell), Nadine Velazquez (Catalina), and Ethan Suplee (Randy) appear in episodes of Raising Hope, and of the cast. Also Barney (in Raising Hope) plays a semi-known role in My Name Is Earl. At one point Jason Lee's character refers to Barney as Kenny (the character Gregg Binkley portrayed in My Name is Earl).
In the episode "Don't Vote for This Episode", Jimmy is seen watching one of the pornos made by Ernie Belcher (It was the one where the girl kicked the guy in the nuts over and over again).
In the episode "Gambling Again," there is an appearance by MNIE character Patty the Daytime Hooker.
The episode "Making the Band" serves as a kind of My Name is Earl reunion with countless references and several returning actors.
At the end of the episode "Hot Dish," a muffin baking competion in Camden County is mentioned, which was where My Name is Earl was set.
In the episode "Yo Zappa do: part 2" (season 3, episode 16), Burt kicks NBC producer Graham Clarke in the groin, stating "That's for cancelling My Name is Earl!" and then running off.
In the episode "Making the Band"(season 3, episode 19), Jason Lee (Earl), Jaime Pressly (Joy), Eddie Steeples (Darnell), Nadine Velazquez (Catalina), and Ethan Suplee (Randy) appear, making several references to MNIE. At one point Jason Lee's character,Smokey Flloyd, says to Eddie Steeples' character "Hey, Pizzaman", referencing Earl's common saying "Hey, Crabman". Jaime Pressly's character also admits to sleeping with Eddie Steeples' character, cheating on her current husband, portrayed by Ethan Suplee, who is, of course, oblivous. Eddie Steeples' character also admits to being in the Witness Protection Program. There are numerous other references throughout the episode including Nadine Velazquez jumping, as she does in the club as Catalina. The episode then ends with Jason Lee narrating as he does at the end of MNIE.
There are various Chubby's products shown in Raising Hope,For example, in episode's like "Don't Vote For This Episode" (Chubby's Burgers) and "The Chance who Stole Christmas" (Chubby's garbage disposal company).
"Inside Probe" features Inside Probe show in MNIE.
Also, later on the show a commercial for MNIE is shown.