Catastrophe Channel 4, 10pm
First episodes of sitcoms rarely go down well with audiences. So it’s unusual for one to hit the ground running – which is why Sharon Horgan and Rob Delaney deserve plenty of plaudits after last week’s great opening edition. It introduced us to the characters they’ve both created and play who are, funnily enough, called Sharon and Rob. Well, at least they won’t get confused. This time around, pregnant Sharon is trying hard to get to grips with the idea of Rob living with her – and her brother Fergal isn’t exactly helping the situation.