Wyvern, an MMORPG/MUD with retro graphics and Java-based clients for multiple platforms, including a PDA client that won an award.

I recently found out that Wyvern was created and is maintained by a friend and coworker of mine. Also: I remember seriously considering dedicating all of my free time to trying to win the very award the Wyvern PDA client won. It wouldn't have beaten Wyvern, so I guess I'm glad I didn't, but I was fond of my idea.