Who reads out the title of each episode?

Ash. (Presumably this is a courtesy for the many viewers who wouldn't know how to read yet.)

That was easy, wasn't it. Now try the hard ones. Click on the dot to see the answer.

In which episodes did someone else read the title?

The title of the third episode, Ash Catches a Pokémon, was read by Misty, perhaps because it would sound strange for Ash to refer to himself in the third person. The title of an Orange Islands episode, Stun Spore Detour, was also read by Misty, presumably because Ash and Tracey were both sick. Do you know of any others?