As much as I hate doing it, I sit down at Word and Excel in campus computer labs every time I have to write lab reports. OO.O could almost do the job, but not quite. The two biggest missing features (in my opinion) are the user-definable error bars and the clunky formula editor.

The error bars, in particular, have been a common gripe for 3 years. I find it absolutely amazing that no one has fixed it. OO.O is USELESS to science people without them.