Raising Hope is a TV show by the same man who created My Name Is Earl, Greg Garcia.
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.
Drakkar Noir (Jimmy's goth-name) is also the same name as Kenny James' (Gregg Binkley/Barney's character in My Name Is Earl) cologne in one episode in the first season.
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.
Earl, Joy and Darnell appear in episodes of Raising Hope, and Kenny Is a part of the cast. Also Barney (in Raising Hope) plays a semi-known role in My Name Is Earl. (This is unclear/wrong, Barney IS Kenny IS Gregg Binkly, just redundant?)