My lock is where my heart is.  But I levelled him amongst druids and was really impressed with their abilities so I created my druid for my cousin's (then) druid only guild.  I haven't done a whole lot with him since he hit 60 though - I've been concentrating more on Kray.

At one point while levelling Kray a rl friend met up with me with his shadow priest and I was very impressed.  Ever since then I've wanted to try out a priest and with the lull in raiding of late I've been afforded some time to do so.  Just because everyone talks about how difficult it is to level a holy priest, and because I wanted to learn about healing, my lvl 33 priest is holy.

I've started a rogue as well just to level up leisurely with my brother.  She's very low level.  Once my priest hits 60 (70?) I'll decide what lies in the rogue's future and will either level her up, or if she's gonna keep inline with my brother's rogue I'll start a mage.

So that's my big 'ole story regarding alts.  Of course, I'm not counting my 14 or so bank toons. :)