C-SPAN Classroom offers handy sets of videos that they call Bell Ringers. Bell Ringers are short videos about contemporary issues in government, politics, and business. Each Bell Ringer video is accompanied by a list of key vocabulary terms and a list of discussion questions to use in your classroom. The comparative government Bell Ringers are a recently released batch of videos that are appropriate for high school classrooms. Links to each of the six videos are included below.
Australian Parliament Question Time
British Parliament Question Time
Powers of the British Prime Minister
United States vs Britain Campaign Finance Laws
Bell Ringer videos do not have to be used in their entirety. As a registered member of C-SPAN Classroom (membership is free) you can clip videos to display just the sections that you want your student to watch.