The article 'an' is used before words that start with a vowel (a,e,i,o,u). The examples you show should start with 'a' and not with 'an' because the word after the article start with a consonant. There are a few exceptions, like euphamism, or euthanasia.
Michael Bay directed both Transformers movies'.
Michael Crichton originally wrote the pilot of "ER" as a movie.
Steven Spielberg
Steven Speilberg.
Jaws was directed by Jeannot Szwarc. ET was directed by Steven Spielberg.
Steven Spielberg
YES
Steven Spielberg
Dreamworks
Schindler's List.
steven spielberg
Michael John Fuller has: Played Barry in "Pubescence" in 2005. Played Thomas in "The Crusader" in 2007. Played Boyfriend in "Vegan 101" in 2009. Played James in "Finn" in 2011. Played Mike, The Mic in "Behind the Scenes" in 2012. Played Steven Spielberg in "Greatest Moments in Musical History: John Williams" in 2012.