In the 1980s John Cleese recorded a famous party political broadcast for the Liberal/SDP Alliance about the merits of proportional representation. Courtesy of YouTube and a US electoral reform group, here it is:
You may also note that it was back from when party political broadcasts (PPBs) could last up to 10 minutes and usually did. As John Cleese demonstrates, when done well the full 10 minute format could let an issue be explained and argued in detail without becoming boring. It also gives us even longer to enjoy John Cleese’s jumper.
His 1997 sequel is also well worth a watch, which you can do so here.