Sakura started to become kinda awesome around episode 20-something IIRC, when she totally owned some puppetmaster dude. Then I think they introduced a new main character shortly afterwards, haven't seen much of it since then.
LOVED Dragonball Z as a kid. I have all the episodes on my hard drive... watched something like 18 episodes a day when I had flu a couple years ago, good nostalgia.... still haven't finished the Buu saga though!
Thinking of downloading some Dragonball Z-Kai episodes at some point. (It's just DBZ, but with all the filler taken out)
Azumanga is class.