You guys are so far off it's almost funny. Who he looks like is the 2nd coming of Clu Gulager.

Speaking of resemblances Ive always thought the late former child actor Jonathan Brandis had a fairly strong resemblance to Jeff. They could have quite easily been father and son.
Jonathan Brandis(19762003)
http://www.imdb.com/board/20000970/?ref_=tt_cl_t1
Anyone unfamiliar with Brandis should know his credits included starring in
Stephen Kings IT
, the relatively short lived Stephen Spielberg produced TV series
SeaQuest 2032
alongside Roy Scheider and the lacklustre
The Never Ending Story II; The Next Chapter
. He sadly took his own life in November, 2003 at the youthful age of 27. A shame really as he had talent as well as good looks and had his whole life ahead of him. Unfortunately his career wasnt really going anywhere special and he was eventually ignored by mainstream Hollywood. Perhaps that contributed to his eventual suicide, no doubt however hed suffered from depression or bi-polar disorder and it would have happened anyway. Never the less it was still very sad and tragic.

in this pic a mix between charles manson and mel gibson with the beard
http://img4.wikia.nocookie.net/__cb20080209154150/lost/images/6/69/Jef fFahey.jpg

Looks alot like Waing111cro. Kevin Gage Thought it was cool how Trejo,De Niro and him were working on this film after being in Heat together, then i saw it wasnt actually Waingro!!! doh.

I was thinking John Stamos allowing for the age difference (i.e. during Fahey's films of the 90's). Stamos has aged quite well; but they're both the same height, with similar facial features, especially around the eyes.

He looks like R. b68Lee Ermey!

I was just watching him in the Under the Dome premiere, and he reminded me of Christoph Waltz.
I usually think Jeff looks only like Jeff, so I probably haven't seen him in a while.

Michael McDonald from the Doobie Brothers
http://www.imdb.com/board/20567909/?ref_=tt_trv_cc
Oh well. Whatever. Nevermind.

Vera Farmiga.

I know this thread is like three years old and you've already gotten a lot of responses, but I actually thought the same thing today and came on this board to see if anyone else agreed!
I don't put movie quotes in my signature.

Yeah, there's a similarity.
http://www.amazon.com/The-Mortal-Creeps-ebook/dp/B006LO3TCA

Josh Holloway. Seriously, when I saw younger pictures of Jeff, the first thing I thought was, "Is he who Sawyer was based off of?"

I always thought he looked like Billy Zane. I thought for a long time it was Fahey in Dead Calm and the Phantom, but both those featured Billy Zane.

Exactly. A combination of Billi Zane and Billy Bob Thornton.

Reminds me of Billy Zane.

I like this guy in his roles!!
Looks like William Devane to me: http://www2.pictures.gi.zimbio.com/ABC+Winter+Press+Tour+Star+Party+Arrivals+g_k9KA53MRSm.jpg
http://www.google.com/images?hl=en&safe=off&q=william devane&um=1&ie=UTF-8&source=og&sa=N&tab=wi&biw=1280&bih=737

he is the lawnmower man.

Reminds me of the Lawnmower man

When I saw him in LOST I actually thought he was Paul Le Mat, since I not long before that watched The Puppetmaster.
Then, I checked it out and understood I was wrong.

I think he looks a lot like David Della Rocco (The Boondock Saints) what with the round cheeks and those eyes, in that combination I can totally see Rocco in him.

I think he looks like Eric Roberts
http://www.colleenpatrick.com/blog/uploaded_images/Eric_Roberts-748489.jpg
To be honest I thought they were the same person, until I couldnt find Eric Roberts in the credits of LOST

my ex husband!!!

Thank you! I thought I was literally the only one who thought he looked like Clark Gable. I was going to mention it on the board and I was stunned to see someone thought the same thing! I think he still looks like Clark even when he's older with different hair. But you are absolutely right, one can especially see the resemblance in "White Hunter, Black Heart".
"I'll think about it tomorrow."

Naw, I don't see that at all. Watch him when he's younger, in movies like "White Hunter, Black Heart" and he may remind you a great bit of Clark Gablealbeit with lighter hair.