Last month cult hit , with season 5 available as a series or individual episodes.

Season 5 has been joined by Lost season 1 (£29.99; US$44), season 2 (£29.99), season 3 (£41.99) and season 4 (£33.99).

On average Lost in HD will cost you an additional £10 compared to the already available standard television download, although season 3 costs an additional £14.

As a comparison, Lost seasons 1-4 in HD will set you back £136, and a sizeable chunk of your hard drive, compared to around £100 for the DVD box set complete with numerous extras.

Other popular and cult US shows include the critically acclaimed Battlestar Galactica, Heroes, 30 Rock, the US version of The Office, medical dramas Grey's Anatomy and House, Eureka, Psych, Dirty Sexy Money, Lipstick Jungle, Ugly Betty and Private Practice.