Medicom put out a 12" Jack Shephard figure in 2008 as part of their Real Action Heroes line. I monitored eBay for a few months until I finally found one offered at a decent price.
I "customized" the figure by adjusting the tie such that it looked to be blown by a brisk wind.
You can get some nice angles with the figure, especially in conjunction with a bit of mood lighting.
Kate really knows how to get into Jack's head.
The jacket isn't particularly well made, but it sports a rip in one sleeve as shown in the pilot.