I've been watching it again recently. It's so brilliant. Even the worst episodes aren't as bad as I used to think - A Royal Flush is good until the last ten minutes, the first half of Miami Twice is great and of the last three episodes, only the first one is outright bad IMO.
The documentary series was good, but could very easily have been scaled back to a couple of hours at most - there was a ridiculous amount of repeated footage, and even casual fans will probably have heard a lot of the stories before (Jim Broadbent was the first choice to play Del, if the chandelier scene went wrong the show would have been cancelled, David Jason was going to leave after the end of the fifth series). But as mentioned above the outtakes were good and new to me, and it was nice to see some relevant people talking about the show other than Boycie and Marlene, who have made a creditable but thoroughly irritating career out of talking about the show at every possible opportunity.
If anyone is really desperate for new Fools and Horses detail, David Jason's latest autobiography offers more new info than the documentary.