This week's best on demand TV
1. Catastrophe
Sharon Horgan and Rob Delaney's acerbic comedy about a couple who get pregnant after a one-week-stand was one of this year's funniest new sitcoms. The second series has just started on Channel 4, and it's just as sharp, vulgar, and uproariously funny as the first. In the opening two episodes, the pair are adjusting to family life - and try to rekindle their romance with an ill-fated minibreak to Paris.