re 'wish there was a filming tour as i don't want to miss out on any of the places they filmed'. hire a car for a while when you are out there. locals will be able to point you in the direction of some of the filming locations. some of the filming was done in sami, but obviously on a set which is no longer there. also antisamos beach which is close to sami.
however, if you explore a bit, you will find so many beautiful spots anyway that it wont matter whether they were on the film or not, you'll have a fab time making your own discoveries.
Kefalonia is such a varied island, it is a joy to explore.
the south east around lassi, the livathos region is covered with olive and citrus groves, with a network of tiny pretty villages such as metaxata, where lord byron lived and wrote for a while, and the strange kitsch village of kourkoumelata which is like a greek version of port merion in wales, built by a rich shipping family after the earthquake. there are lots of strange buildings like a mini greek temple for a school.
in the west of kefalonia, the paliki peninsula is much more a kefalonia of yesteryear, still very agricultural. you will see lots of farmland, beehives and some nice countryside if you are into walking. also some fantastic lesser known beaches, like petani.
the north of the island is wild and mountainous and very beautiful but feels a little foreboding. it has some of the prettiest harbour villages on kefalonia - fiscardo and assos. this end of the island escaped the worst ravages on the 1953 earthquake - fiscardo almost entirely intact, assos suffered a little but has a wonderful feel of crumbling grandeur with its partial ruins and imposing venetian fortress.
the centre of kefalonia has the island's biggest mountain, mount aenos, where there are supposedly still wild horses, though not many can be left now. there is a project to try and save them - link at the bottom. you can drive most of the way up the mountain and the road is really ok. it is noticeably cooler when you get up there amidst the pine forests. dipping down from the mounatin, the omala valley is well worth a visit too, a rare flat patch of land that is kefalonia's most prized agricultural land. lots of vineyards, a huge monastery and a strange field with twenty or thirty wells all within a few feet of each other.
dipping down to the south west of the island, to skala and katelios, several kilometers of the coastline with beautiful sandy beaches.
it's all there for the exploration, so much to see you certainly wont get bored. read up here, you wont miss any of the gems of kefalonia
http://kefalonia.foi.org.uk
info on wild horses of aenos project
http://www.geocities.com/tyiakoum/environment/Horse2Tammi.htm