In the beginning as Spyros and his family are landing their boat, Spyros sees soldiers of Argos demolishing the statue of Zeus. In the aerial shots the fishing boat is in full sail. Just as the statue hits the water, the sails are drawn.
In a shot of Zeus sitting on the throne, Emma Thompson, in costume as Nanny McPhee, is actually hiding behind the throne - they were filming next to each other. The story was related during an interview - she sneaked on set during a break, sat on Liam Neeson's lap and said "I think you've been a very naughty boy". He suggested she stay when filming resumed, as the shot wasn't going to be on him anyway, but she didn't want to throw off Ralph Fiennes, so hid behind the throne to get out of the way, and a shot of it with her hidden behind, unseen, is in the movie.