ABC (ended 2010)
Sam Anderson, Bernard, was on NCIS.
Tracy Middendorf, Bonnie (Looking Glass), was on NCIS.
Ron Bottitta, Leonard Sims (the guy Hurley got the numbers from!), was on NCIS
Samm Levine, an anonymous "Clerk" in "Everybody Loves Hugo", was on NCIS.
Aramis Knight, played the part of a "Sam" early in the last season of LOST at the temple. He was on NCIS.