(written from a Production point of view)
Thomas "Tommy" Gormley was the first assistant director (1st AD) for J.J. Abrams on Star Trek.  He previously worked with Abrams on the 2006 Paramount Pictures release Mission: Impossible III, which was also written by Alex Kurtzman and Roberto Orci and photographed by Dan Mindel. Currently he is also working as first assistant director on the Star Trek Into Darkness. 
A native of Glasgow, Scotland,  Gormley began his career as an assistant director on British made-for-TV movies and independent films. His first major studio film was Mike Figgis 1994 drama, The Browning Version, which was distributed in the United States by Paramount Pictures. The first film he worked on as first assistant director was 1996's The Leading Man, whose cast included David Warner.
His first American production (although it was filmed in Ireland) was Jim Sheridan's 1997 acclaimed, Golden Globe-nominated drama The Boxer. He then worked as 1st AD on the British-made, Academy Award-nominated 1998 historical drama Elizabeth. His subsequent 1st AD credits include the films Angela's Ashes (1999), The Tailor of Panama (2001), Paramount's The Four Feathers (2002), Veronica Guerin (2003), and The Phantom of the Opera (2004).
Gormley was Jonathan Frakes' 1st AD on the 2004 adventure film Thunderbirds. He was also 1st AD on the acclaimed HBO series Rome, for which he shared a Director's Guild of America (DGA) Award for Outstanding Directorial Achievement in a primetime dramatic series.
More recently, Gormley was 1st AD on the 2007 film Elizabeth: The Golden Age (the sequel to 1998's Elizabeth) and the upcoming fantasy film Inkheart. He was also 1st AD for the second unit of 2007's The Golden Compass.