Does anyone have a reference to Ven Ananda's full awakening? As I recall he was walking, determined to achieve arahantship on the eve of the the First Council (since otherwise he would be the only non-arahant --- he was a stream-enterer at the time). He decided he had too much energy and should do some meditation lying down. During the change in position from standing to lying down he became an arahant. This story is often told on retreats to emphasise how important it is to be mindful at all times.
I think that the account is in the Vinaya somewhere.