You need to love really stupid and bizzare humour to enjoy Ally McBeal. Luckily I do and so I love it. I came to the show late and this is my first time watching (now nearing the end of season 4) but I have found the characters quite addictive - especially John Cage. Not sure I want to watch season 5 having read some of the reviews - esp. the loss of key actors.
The one big disappointment about this set is the almost complete lack of extras. There are two full sets listed on Amazon - one (the other one) refers to loads of extras such as interviews, commentaries and cut scenes as included with individual season purchases (however one reviewer on that listing says they don't exist on the individual seasons). They certainly don't exist in this package which is a great pity. There is the odd featurette (a few minutes long) at the end of some of the seasons but I can't believe there weren't hilarious out-takes from this lunatic cast and surely a few cast members could have contributed the odd commentary! What a pity.