You can catch Bernard Hill (Theoden)in 'Titanic' on Cinemax.
You can see Dominic Monaghan (Merry) in 'Hostile Waters' on TBS.
You can see Viggo Mortensen (Aragorn) in 'Passion of Darlky Moon' on TMC.
Double bill for Liv Tyler (Arwen) in 'Armageddon' on Encore, and 'Stealing Beauty' on IFC.
Ian McKellen (Gandalf) in 'I'll Do Anything' on Cinemax.