Genom åren har Ian haft en mycket framgångsrik karriär, här är en lista på vilka filmer/tv-program han medverkat i.

1. The Host (2011) (pre-production) (rumored) .... Ian O'Shea
2. Cradlewood (2011) (pre-production) .... Josh
3. "The Vampire Diaries" .... Damon Salvatore (44 episodes, 2009-2011)
4. "Lost" .... Boone Carlyle (30 episodes, 2004-2010) 
   
   
   
5. How to Make Love to a Woman (2010) .... Daniel
6. The Tournament (2009) .... Miles Slade
7. Fireball (2009) (TV) .... Lee Cooper
8. Wake (2009/I) .... Tyler
9. Lost City Raiders (2008) (TV) .... Jack Kubiak
10. The Lost Samaritan (2008) .... William Archer "Tell Me You Love Me" .... Nick-  (6 episodes, 2007)
11. Marco Polo (2007) (TV) .... Marco Polo
12. The Sensation of Sight (2006) .... Drifter
13. Pulse (2006/I) .... Dexter
14. TV: The Movie (2006)
    ... aka "National Lampoon's TV the Movie" - USA (complete title)
15. Recess (2004) .... Cooley
16. The Old Man and the Studio (2004) .... Matt
17. "Smallville" .... Adam Knight (6 episodes, 2004)
18. In Enemy Hands (2004) .... U.S.S. Swordfish: Danny Miller
    ... aka "U-Boat" - Europe (English title) (DVD box title)
19. Fearless (2004) (TV) .... Jordan Gracie
20. "CSI: Miami" .... Ricky Murdoch (1 episode, 2003)
    ... aka "CSI: Weekends" - USA (promotional title)
    - The Best Defense (2003) TV episode .... Ricky Murdoch
21. "Law & Order: Special Victims Unit" .... Charlie Baker (1 episode, 2003)
    ... aka "Law & Order: SVU" - UK (promotional abbreviation), USA (promotional abbreviation)
    ... aka "Special Victims Unit" - New Zealand (English title), UK (informal short title)
    - Dominance (2003) TV episode .... Charlie Baker
22. The Rules of Attraction (2002) .... Paul Denton
23. "CSI: Crime Scene Investigation" .... Tony Del Nagro (1 episode, 2002)
    ... aka "CSI: Las Vegas" - South Africa (English title) (informal alternative title), USA (syndication title)
    ... aka "C.S.I." - USA (short title)
    ... aka "CSI: Weekends" - USA (promotional title)
    - Revenge Is Best Served Cold (2002) TV episode .... Tony Del Nagro
24. Changing Hearts (2002) .... Jason Kelly
25. Life as a House (2001) .... Josh
26. Anatomy of a Hate Crime (2001) (TV) .... Russell Henderson
27. "Young Americans" .... Hamilton Fleming (8 episodes, 2000)
28. "Now and Again" .... Brian (1 episode, 1999)
    )
29. - A Girl's Life (1999) TV episode .... Brian "The Big Easy" .... I.Q. (1 episode, 1997)
30. .Celebrity (1998) (unconfirmed) (uncredited
31. - The Black Bag (1997) TV episode .... I.Q

Self:

1. Making 'Wake' (2010) (V) .... Himself
2. The Cast of 'Lost': Before They Were TV Stars (2010) (TV) .... Himself
   
   
3. "Late Night with Jimmy Fallon" .... Himself (1 episode, 2009)
   - Episode #1.144 (2009) TV episode .... Himself
4. Scream Awards 2009 (2009) (TV) .... Himself
5. "The Jace Hall Show" .... Himself (1 episode, 2009)
   - James Gunn & Brutal Legend (2009) TV episode .... Himself
6. "Current TV" (2005) TV series (unknown episodes, 2007)
7. "Tavis Smiley" .... Himself (1 episode, 2007)
   - Episode dated 22 May 2007 (2007) TV episode .... Himself
8. Creating the Fear: Making of 'Pulse' (2006) (V) .... Himself
9. "The Tony Danza Show" .... Himself (2 episodes, 2005)
   - Episode #2.64 (2005) TV episode .... Himself
   - Episode #1.74 (2005) TV episode .... Himself
10. Welcome to Oahu: The Making of the Pilot (2005) (V) .... Himself
11. Before They Were Lost: Personal Stories and Audition Tapes (2005) (V) .... Himself
12. "Live with Regis and Kathie Lee" .... Himself (1 episode, 2005)
    ... aka "Live with Regis" - USA (new title)
    ... aka "Live with Regis & Kelly" - USA (new title)
    - Episode dated 7 April 2005 (2005) TV episode .... Himself
13. "Good Morning America" .... Himself (1 episode, 2005)
    ... aka "G.M.A." - USA (promotional abbreviation)
    - Episode dated 7 April 2005 (2005) TV episode .... Himself

Archive Footage:

1. The Lost Survival Guide (2006) (TV) .... Boone Carlyle
2. Las cinco caras de David LaChapelle (2006) (TV) .... Boone Carlyle
3. Lost: Revelation (2006) (TV) .... Boone Carlyle
4. Destination Lost (2005) (TV) .... Boone Carlyle
5. Lost: The Journey (2005) (TV) .... Boone Carlyle