Mindblowing trivia: The PC version of VisiCalc is only 27.5K. There are pictures on this very thread bigger than that.
BTW, you can download and run a legal copy of the original VisiCalc. It's only the the PC version though; the author couldn't get permission from whoever owns the Apple II version now, I guess.
I have a really nice text editor that's only 26K. Amazingly enough, it even has a complete Pascal compiler built in.