As most of us know there is a tremendous amount of hacks/add-ons available at vbulletin.org, but what is your favourite?

I would say at present mine is photoplog as this seems to be the only decent free gallery add-on.

It doesn't have all the features I would like, but you can't argue with free.

vBulletin version: 3.7.0.

vBulletin 3.7.0 contains a plethora of new features, many of which have been long requested by users and customers, while other new features will come as a surprise to everyone.