For those that pay 4.99 per month for the entertainment pass on Now TV.....

Does it include whole series to watch? For example, on the website it advertises Friends as part of Now TV entertainment - but does that just mean I can catch up on the latest episodes shown on Comedy Central or does it mean I can watch all seasons and episodes when I want as much as I want?

This website.... http://watch.nowtv.com/entertainment/channels gives you what's 'on demand' on the NOW TV Entertainment...just select a channel & they list TV programmes & how many series or episodes are 'on demand'. At a quick glance can't see any Friends episodes on demand (Comedy Central)...but as mentioned it was only a quick look...check later when I have more time. Hope this helps.

NowTV is a mix of boxsets, live tv and catchup.
You can watch nearly everything live (daily exceptions here), catchup tends to be for 30 days (although some are just 7) after a show first airs (not for repeats, so no Season 2 of Elementary for me), and boxsets hang around for a couple of months.
You should be able to have a look around without signing up by visiting http://watch.nowtv.com/entertainment although you should be able to get a fivers worth of telly out of it even if you do decide to cancel.

And if you are unlucky - you may experience a number of outages.

missing epusodes, bad playbacks, incorrect programmes.

be prepared to miss that important episode when this happens.

NowTV may not refund when this happens. (Have yet to refund my outage experiences)