17:32Those That Can'tThose that Can't Series 1Episode 6: Big Bag of Shush: David Wilkie's ComingBBC Radio Wales Duration: 26 minutes Sun 30th Mar 2008, 17:32 on BBC Radio Wales FMSitcom set in a comprehensive school. 6/6. Big Bag of Shush - David Wilkie's Coming: Bryn is very excited at a prospective visit by the famous Olympic swimmer.GenresComedySitcomsBrandThose That Can'tSeriesThose That Can't: Those that Can't Series 1 Source: BBC Online