Rainy afternoon here, so I made a list of youtube clips for myself (see what happens when one is not gainfully employed?). Some of them are historical, others are interesting in that they show some feature of the trailers, or show people doing what we buy them for (travelling, remember?), and others are just plain silly, like the clip from The Long Long Trailer.
In any event, here they are for your pleasure. The ratings are purely those from youtubes ratings are are less than more reliable. However, the KETC one is absolutely
Lucy in a Trailer! (clip from The Long Long Trailer)