The business record exception to hearsay (ORS 40.460). I don’t generally use this rule, but when dealing with financial cases with a multitude of documents, it is very useful.

Learned about it at law school and work.

A very fun fact. It is almost like the Macy’s Day Parade in United States. People watch the parade and hosts provide commentary on the floats and groups involved. It usually lasts several hours and people just leave it on in the background while doing Thanksgiving (November 25) tasks.