they had to"americanize" it to show it on network tv. ie, tone it down, and probably dumb it down too. british coupling is probably too explicit for us networks, but i'm sure if showtime or hbo did a version, it'd be closer in feel to the original british version.
on the topic of british tv, who else is bummed that since bravo is now owned by nbc, they didn 't buy the rights for the final season of cold feet? so unless you get it pirated or buy it on dvd and happen to have a multi region dvd player, you can't see it! bugger!