In the Arrested Development episode "Missing Kitty" (S01E16) Tobias, during his in-prison research for the role of "Frightened Inmate #2", is having difficulties with his new roommate White Power Bill. But when he approaches the Warden with his fears, he manages to convice Tobias of going on:
Warden: But didn't you come here to research the nature of fear? I can't think about a better teacher than White Power Bill, he's like a master's course unto himself.
Tobias: So you think I'm a coward?
Warden: There's only one man I thought to call a coward, that's Brian Doyle Murray...No, what I'm calling you...is a television actor.
But I didn't get the reference to Brian Doyle Murray. Who is this and why does the Warden call him a coward? It seems unlikely for the show to just pick any arbitrary name without any relevance to it. Seeing that there is a famous actor named thus still doesn't help me to understand his relation to Arrested Development. Or maybe it is a reference to some casting related quarrels between the show and the actor (as Arrested Development indeed sometimes references incidents related to the show's production itself)?