In BW1, I was a wretchedly-evil, and dare I say, Undead-using god... I made ample use of the Corpse/Teleport trick, often turning 75-90% of my villagers into tireless (after the LONG rest after their murder and resurrection) skeletal slaves. My creature was good; I often used him to take villages, and to clean up my messes whenever I misfired a miracle or threw a temper tantrum.
In BW2... I have to admit, I ended up rather neutral. I always had an evil backup plan (ie., cram villas uncomfortably close, in concentric rings around the village square, use destructive miracles on enemies, use the creature as a Wonder-smashing suicide weapon to slow the enemy down), and my alignment fluctuated between moderate good and extreme evil. Usually, I grew tired of playing evil, as the transformation no longer affects the sky, and only subtly affects the lighting within your influence. In a word, evil wasn't scary or evil enough, it was drab and dilapidated.
Also, my affinity for trees (something which cannot be understated; I have hundreds of them, lining the inside of all walls and surrounding all buildings, regardless of alignment) both pushes my alignment up, and can be the cause of my downward spiral into murderous evil. Suffice it to say, when a certain tribal leader cast the Hurricane Epic in my village, I responded with brutal, unrelenting force. An enemy life for every broken branch or torn leaf, I reasoned. I also employ the effectiveness of punishment spikes, especially around altars, smelters, granaries, fields and wonders. I've also done well as an impressive evil god, murdering my people for sheer pleasure, with the Creature alternating duties of village upkeep and platoon-slaying, all the while building impressively and placing many, many blackened trees.