From the 12th through the 14th of this month, you can play a pre-beta version of Guild Wars, a great-looking new MMORPG produced by Blizzard alumni, with people who are demoing the game at E3. The client is only a 63 KB download (during installation and play, you only download data when you first need it), and you can get it from my server here. Check out http://www.guildwars.com for more information.

By the way, Guild Wars will have no monthly fee. They expect to pay for the hosting with revenue generated by bi-annual expansions.