A big no to WoW. There are better MMOs out there, or atleast were.
I prefered Dark Age of Camelot, though it had many of the same faults as WoW. The PvP /could/ be excellent a times, challenging the player to be aware of his surroundings, and what he could do for the team best. Unfortunately the Malee classes kept being more and mroe marginalized with new spells of epic awesomeness. I think it was good in its early days, but some Ss got ahold of it and started inserting content that simply did not fit. FOrinstance, the game is based on Aurtherian, Irish, and Norse legends with some high fantasy thrown in. Then an expansion based on atlantis came out, and all the weapons and armor went from something half way practical to barnicle armor and coral swords. The extra content was mostly a reward to the WoW style raiders to spend endless hours getting items of pwn to beat everyone else without trying. It was so loathed that they made servers that removed all of that packs content, minus the graphics enhancement.
WWII Online was awesome. It simulated an entire front of war and featured some pretty advanced physics for the time. The fact that it took as much as 15 minutes to get to the battle required an enormous amount of patience, so there was a pleasent lack of the usual douchery associated with online gamers. This was compounded by the fact that a singleshot was almost always fatal, and most often you died without ever knowing where your killer was, who he was, or how you died. It lead to people actually employing tactics, and haveing a great respect for their avatars life by putting the fear of death in the player.