They are filmed all over. Mostly in Mexico but recently some were filmed on St.Thomas and St.Croix in the Virgin Islands.
nevada...on highway 50.
it was filmed on the island
canada
Scorpion Island was filmed in Fernando de Noronha, Brazil.
"Boy on a Dolphin" was filmed on the island of Hydra in Greece.
Spy Kids 2: Island of Lost Dreams (2002) was not filmed on an island. Most of the exotic scenes were filmed in Costa Rica.
For reality shows, it's because they are all filmed on hand held cameras. Can't really say for commercials, not many that I've seen are filmed with hand helds.
Courtney Pauroso
Xpu-Ha playa south of Playa Del Carmen
It was filmed in the Skopelos Island, which is one of the Sporades Group Islands of Greece.
It is filmed on the island of Oahu in Hawaii.
Red Rover was filmed on Minister's Island near St. Andrews in New Brunswick.