I fell in love with 30 Rock around halfway through Season One. I've been buying the seasons the second they become available in the UK. I was a little disappointed in the 4th season - it felt like the show had started to lose its way a little and I just found myself taking a few weeks to get through the whole boxset, as opposed to a few days as had been the case with previous series.
HOWEVER: Season Five is a real return to form. I'd managed to see most of the episodes already in time spent in the US, and I've just watched the final few episodes. The humour is spot-on, and there's some really innovative ideas in there which help keep your interest - including a show shot live (a little gimmicky, but it worked brilliantly) and the Queen of Jordan storyline where Tracey's wife gets her own reality TV show.
For those that have found their interest starting to wane on Season Four like I did, don't let that put you off snapping up this season. It's a fantastic return to form and is worth every penny.
Extras are better than they've been on past releases - there's 10 audio commentaries, which to me are the best value extras you can get - it gives you a second way to watch the episodes, and there's tonnes of great insights and stories about the production.
Thanks to Tina Fey and the brilliant team at 30 Rock for a much-loved addition to my home library.