I assume I don't need to post a link to Spiderweb. . .
Tom Proudfoot has made some fun games: Nahlakh and Natuk. Classic CRPGs (not much in the roleplaying department) they're both really fun. Though good luck getting Nahlakh to run on a modern OS (I could never get it to work right in XP, even though I downloaded some interesting software that might help in that regard I've never gotten around to it).
Nahlakh has some goofiness (your choice of character icon determines starting skills & gear, for example), and is very difficult. The game system is "improve via doing", there are no levels or experience points. You can buy training for ability scores and hp. Pretty nifty magic system, good TB combat (where things like facing come into play).
Natuk is sort of a spiritual sequel where you play a party of orcs bent on revenge for being imprisoned. Similar game system, but there is XP this time around. The "play as orcs" is mostly wasted from an RP standpoint (though the game is a blast). Though you generally do better by being a bully, there aren't alot of opportunities to play wiyh that.
He has abandoned work on Pirates of the Western Sea. I hope he returns to it eventually.
Helherron is a pretty fun Nahlakh/Wizard's Crown like game. Version 2.0+ has really tweaked the game balance (example: some classes that were previously useless now aren't, but one class got overpowered). That said, I really enjoyed it, and it is very cheap to register ($12.50 US iirc).
Inside the Park Baseball probably won't appeal to non baseball fans. I suspect it will end up being more novelty, and there isn't a demo so no trying it. I'm very intrigued though.