Brazil is pretty famous for having drastically different cuts. The studio really screwed over Terry Gilliam's vision. Thankfully it's possible to watch both versions now.

There's also a completely different version of the first Anchorman out there made from alternate takes and a lot of different scenes. It has an entirely different subplot about a group of terrorists, with a lot of recognizable actors that were left out of the theatrical release. It's called Wake Up Ron Burgundy, and I definitely recommend it if you enjoyed the first one.