I don't know for sure about your criteria of good or bad anime, but for me Kyou kara ma ou was a terrible one T__T
Actually, maybe I could say, It was bad [for me] If you ask me what is worthy from that anime is the opening song, but... not too good either ^^
Honestly, at first I found it boring. The first few episodes were so typical I knew what was going to happen etc.
But later on, (giving it a chance), the adventures were great, not to mention the growing relationships between the characters are funny and emotional.
For short, I grew to love it so much! XD
But if you are someone who is anti-yaoi... well... I'm not saying its graphically implied but there is an underlying 'yaoiness; in there. XD