I haven't watched all the extras yet b/c, honestly, they look kinda bland - just like always - the bloopers are kinda funny - but, again, that's about par for the course for Angel outtakes - they suck.
As for everything else - it's season 4, you can't really expect all that much - the season blew chunks like you wouldn't believe (IMO, anyway) - even the writer/director/producer commentaries aren't always enough to make an episode more interesting.
I've almost gotten to the point where I wanna hear either Joss or Doug Petrie, b/c everyone else is boring as hell.
There is one commentary on the S4 DVDs w/ Alexis and Joss - and *that* is awesome! (I think it's Alexis and Joss, I *know* it's Alexis, but not sure if it was Joss or one of the other writers) -- Alexis is fantastic!
that's about the only commentary, so far, that's thrilled me... some of the episodes, b/c I didn't remember enough about the storyline to watch w/ the commentary running, I had to turn the commentary off so I could 'catch up' on what was going on in the story arc.
So - I'm just gonna kick back and wait for season 5....