Free Realms is a brand new game (went live on Wednesday) that's a free to play (with optional microtransactions and monthly membership) MMOG which launches from your browser. There are tonnes of mini games and quests and things. The main target audience is kids, but it's fun for adults, too, especially those who like puzzles and games.
The graphics are a bit cartoony, but not eye-bleedingly so. You can be human or pixie. Every available job is open to you. You switch between jobs with a Wonder Woman like twirl. Some jobs are combat oriented (like brawler and ninja) but others never have any combat at all (like cook and miner). The world in gorgeous and as you wander about, if you encounter something 'agressive' you have to actually click on them to start the combat mini-game. Even the music is pleasant or fun.
I'm not sure if our (Thrax and me) "obsession" with it is because it's new or just because we're finding it VERY fun. We both have membership because we're Station Access subscribers and it's an SOE game, but we played without membership status the last few weeks of beta and found quite a lot to do without the $5/mo membership status.
Haven't bought anything from the Station Market yet (the microtransactions) but it IS tempting. I kinda do want to have a pet following me about and stuff.
I almost forgot one thing, as a chef, you can wield a spatula as your "weapon". *giggles*