You may be able to tell that I'm finally daring to look at the rest of the IGF list...
Emberwind really is as much fun as it looks like, and has demos for both Mac and Windows. Also, despite totally rocking, it's cheap! Check it out! (or heck just buy it. i'm not even an affiliate here, I just think it's COOL.)
There's also an upcoming dating sim (Summer Session style) based on Pride and Prejudice (But not with zombies.). It is NOT yet publicly available, but it looks promising.
(It's not by me, but I'll probably be affiliate-salesing it when it's ready.)